Method for transmitting or receiving uplink channel in wireless communication system, and device therefor

ABSTRACT

A method of transmitting, by a user equipment (UE), an uplink channel in a wireless communication system comprises transmitting capability information related to a panel for a transmission of the uplink channel, receiving configuration information related to the transmission of the uplink channel, and transmitting the uplink channel based on the configuration information. Based on that the transmission of the uplink channel collides with a transmission of other uplink channel scheduled to the UE in a time domain, i) if a first panel related to the transmission of the uplink channel is different from a second panel related to the transmission of the other uplink channel, the uplink channel and the other uplink channel are simultaneously transmitted, and ii) if the first panel is the same as the second panel, the uplink channel is transmitted in a specific resource.

TECHNICAL FIELD

The present disclosure relates to a method of transmitting and receiving an uplink channel in a wireless communication system and a device therefor.

BACKGROUND ART

Mobile communication systems have been developed to guarantee user activity while providing voice services. Mobile communication systems are expanding their services from voice only to data. Current soaring data traffic is depleting resources and users' demand for higher-data rate services is leading to the need for more advanced mobile communication systems.

Next-generation mobile communication systems are required to meet, e.g., handling of explosively increasing data traffic, significant increase in per-user transmission rate, working with a great number of connecting devices, and support for very low end-to-end latency and high-energy efficiency. To that end, various research efforts are underway for various technologies, such as dual connectivity, massive multiple input multiple output (MIMO), in-band full duplex, non-orthogonal multiple access (NOMA), super wideband support, and device networking.

DISCLOSURE Technical Problem

The present disclosure provides a method of transmitting an uplink channel

More specifically, a user equipment (UE) supporting simultaneous transmission across multi-panel (STxMP) can be configured with transmission of a plurality of uplink channels overlapping in a time domain. The present disclosure provides a method of transmitting an uplink channel capable of improving resource utilization in this case.

The technical objects of the present disclosure are not limited to the aforementioned technical objects, and other technical objects, which are not mentioned above, will be apparently appreciated by a person having ordinary skill in the art from the following description.

Technical Solution

In one aspect of the present disclosure, there is provided a method of transmitting, by a user equipment (UE), an uplink channel in a wireless communication system, the method comprising transmitting capability information related to a panel for a transmission of the uplink channel, receiving configuration information related to the transmission of the uplink channel, and transmitting the uplink channel based on the configuration information.

Based on that the transmission of the uplink channel collides with a transmission of other uplink channel scheduled to the UE in a time domain, i) if a first panel related to the transmission of the uplink channel is different from a second panel related to the transmission of the other uplink channel, the uplink channel and the other uplink channel are simultaneously transmitted, and ii) if the first panel is the same as the second panel, the uplink channel is transmitted in a specific resource.

Based on that a priority of the uplink channel is lower than a priority of the other uplink channel, the uplink channel may be transmitted in the specific resource.

The specific resource may be positioned in a time domain that is shifted by a pre-configured unit from a time domain in which the transmission of the uplink channel is configured.

The specific resource may be based on a resource in which the other uplink channel is configured.

Based on that the uplink channel and the other uplink channel are the same type of uplink channels, the priority may be determined depending on a pre-configured priority rule.

The priority may be determined based on at least one of 1) whether a corresponding uplink channel has been scheduled based on a control resource set (CORESET) having a lowest ID, 2) whether the corresponding uplink channel has been scheduled by downlink control information (DCI) based on a specific radio network temporary identifier (RNTI), 3) a periodicity related to a transmission of the corresponding uplink channel, 4) a type of information related to the corresponding uplink channel, and 5) whether the corresponding uplink channel has been scheduled by downlink control information (DCI) preceding in a time domain

If the uplink channel and the other uplink channel are simultaneously transmitted, a resource in which the uplink channel and the other uplink channel are transmitted may be based on 1) the same time-frequency domain or 2) the same time domain.

Based on that all or part of a frequency domain in which the transmission of the uplink channel is configured does not overlap all or part of a frequency domain in which the transmission of the other uplink channel is configured, the uplink channel and the other uplink channel may be simultaneously transmitted based on frequency division multiplexing (FDM).

The uplink channel and the other uplink channel that are simultaneously transmitted based on the FDM may be transmitted based on at least one of a frequency hopping or a repetition.

Based on that a frequency hopping boundary configured to the uplink channel and a frequency hopping boundary configured to the other uplink channel are identical to each other, the uplink channel and the other uplink channel may be simultaneously transmitted based on the frequency hopping and the repetition.

The capability information may be related to whether a simultaneous transmission across multi-panel (STxMP) is supported.

In another aspect of the present disclosure, there is provided a user equipment (UE) transmitting an uplink channel in a wireless communication system, the UE comprising one or more transceivers, one or more processors configured to control the one or more transceivers, and one or more memories operatively connected to the one or more processors and configured to store instructions performing operations when a transmission of the uplink channel is executed by the one or more processors.

The operations comprise transmitting capability information related to a panel for a transmission of the uplink channel, receiving configuration information related to the transmission of the uplink channel, and transmitting the uplink channel based on the configuration information.

Based on that the transmission of the uplink channel collides with a transmission of other uplink channel scheduled to the UE in a time domain, i) if a first panel related to the transmission of the uplink channel is different from a second panel related to the transmission of the other uplink channel, the uplink channel and the other uplink channel are simultaneously transmitted, and ii) if the first panel is the same as the second panel, the uplink channel is transmitted in a specific resource.

In another aspect of the present disclosure, there is provided a device comprising one or more memories, and one or more processors operatively connected to the one or more memories.

The one or more processors are configured to allow the device to transmit capability information related to a panel for a transmission of an uplink channel, receive configuration information related to the transmission of the uplink channel, and transmit the uplink channel based on the configuration information.

Based on that the transmission of the uplink channel collides with a transmission of other uplink channel scheduled to a user equipment (UE) in a time domain, i) if a first panel related to the transmission of the uplink channel is different from a second panel related to the transmission of the other uplink channel, the uplink channel and the other uplink channel are simultaneously transmitted, and ii) if the first panel is the same as the second panel, the uplink channel is transmitted in a specific resource.

In another aspect of the present disclosure, there are provided one or more non-transitory computer readable mediums storing one or more instructions.

The one or more instructions executable by one or more processors allow a user equipment (UE) to transmit capability information related to a panel for a transmission of an uplink channel, receive configuration information related to the transmission of the uplink channel, and transmit the uplink channel based on the configuration information.

Based on that the transmission of the uplink channel collides with a transmission of other uplink channel scheduled to the UE in a time domain, i) if a first panel related to the transmission of the uplink channel is different from a second panel related to the transmission of the other uplink channel, the uplink channel and the other uplink channel are simultaneously transmitted, and ii) if the first panel is the same as the second panel, the uplink channel is transmitted in a specific resource.

In another aspect of the present disclosure, there is provided a method of receiving, by a base station, an uplink channel in a wireless communication system, the method comprising receiving capability information related to a panel for a transmission of the uplink channel, transmitting configuration information related to the transmission of the uplink channel, and receiving the uplink channel based on the configuration information.

Based on that the transmission of the uplink channel collides with a transmission of other uplink channel scheduled to a user equipment (UE) in a time domain, i) if a first panel related to the transmission of the uplink channel is different from a second panel related to the transmission of the other uplink channel, the uplink channel and the other uplink channel are simultaneously transmitted, and ii) if the first panel is the same as the second panel, the uplink channel is transmitted in a specific resource.

In another aspect of the present disclosure, there is provided a base station receiving an uplink channel in a wireless communication system, the base station comprising one or more transceivers, one or more processors configured to control the one or more transceivers, and one or more memories operatively connected to the one or more processors and configured to store instructions performing operations when a reception of the uplink channel is executed by the one or more processors.

The operations comprise receiving capability information related to a panel for a transmission of the uplink channel, transmitting configuration information related to the transmission of the uplink channel, and receiving the uplink channel based on the configuration information.

Based on that the transmission of the uplink channel collides with a transmission of other uplink channel scheduled to a user equipment (UE) in a time domain, i) if a first panel related to the transmission of the uplink channel is different from a second panel related to the transmission of the other uplink channel, the uplink channel and the other uplink channel are simultaneously transmitted, and ii) if the first panel is the same as the second panel, the uplink channel is transmitted in a specific resource.

Advantageous Effects

According to an embodiment of the present disclosure, based on that a transmission of an uplink channel collides with a transmission of other uplink channel scheduled to a UE in a time domain, i) if a first panel related to the transmission of the uplink channel is different from a second panel related to the transmission of the other uplink channel, the uplink channel and the other uplink channel are simultaneously transmitted, and ii) if the first panel is the same as the second panel, the uplink channel is transmitted in a specific resource.

Accordingly, 1) if panel(s) for a transmission of each uplink channel is different, a UE supporting simultaneous transmission across multi-panel (STxMP) can improve resource utilization in the transmission of the uplink channel by simultaneously transmitting multiple uplink channels.

2) If panel(s) for a transmission of each uplink channel is the same, according to the existing method, only one uplink channel is transmitted, and remaining uplink channels are dropped. However, according to an embodiment of the present disclosure, any uplink channel is not dropped. For example, an uplink channel with a low priority can be transmitted in a specific resource. Thus, utilization of resources required for scheduling of the uplink channels is increased. That is, there is no need to transmit again scheduling information for an uplink channel (dropped according to the existing method).

Effects which may be obtained by the present disclosure are not limited to the aforementioned effects, and other technical effects not described above may be evidently understood by a person having ordinary skill in the art to which the present disclosure pertains from the following description.

DESCRIPTION OF DRAWINGS

The accompanying drawings, which are included to provide a further understanding of the present disclosure and constitute a part of the detailed description, illustrate embodiments of the present disclosure and together with the description serve to explain the principle of the present disclosure.

FIG. 1 is a diagram illustrating an example of an overall system structure of NR to which a method proposed in the present disclosure is applicable.

FIG. 2 illustrates a relationship between an uplink frame and a downlink frame in a wireless communication system to which a method proposed by the present disclosure is applicable.

FIG. 3 illustrates an example of a frame structure in an NR system.

FIG. 4 illustrates an example of a resource grid supported by a wireless communication system to which a method proposed in the present disclosure is applicable.

FIG. 5 illustrates examples of a resource grid for each antenna port and numerology to which a method proposed in the present disclosure is applicable.

FIG. 6 illustrates physical channels and general signal transmission used in a 3GPP system.

FIG. 7 illustrates an example of beamforming using SSB and CSI-RS.

FIG. 8 illustrates an example of a UL BM procedure using an SRS.

FIG. 9 is a flowchart showing an example of a UL BM procedure using the SRS.

FIG. 10 is a flowchart showing an example of an uplink transmission/reception operation to which a method proposed in the present disclosure may be applied.

FIG. 11 and FIG. 12 illustrate an example of multi-panel based on an RF switch applied to the disclosure.

FIG. 13 illustrates an example of performing simultaneous transmission across multi-panel (STxMP) according to a method described in the present disclosure.

FIG. 14 illustrates another example of performing simultaneous transmission across multi-panel (STxMP) according to a method described in the present disclosure.

FIG. 15 illustrates an example of signaling between a UE and a base station to which a method described in the present disclosure is applicable.

FIG. 16 is a flow chart illustrating a method of transmitting, by a UE, an uplink channel in a wireless communication system according to an embodiment of the present disclosure.

FIG. 17 is a flow chart illustrating a method of receiving, by a base station, an uplink channel in a wireless communication system according to another embodiment of the present disclosure.

FIG. 18 illustrates a communication system 1 applied to the present disclosure.

FIG. 19 illustrates wireless devices applicable to the present disclosure.

FIG. 20 illustrates a signal process circuit for a transmission signal.

FIG. 21 illustrates another example of a wireless device applied to the present disclosure.

FIG. 22 illustrates a hand-held device applied to the present disclosure.

MODE FOR DISCLOSURE

Hereinafter, preferred embodiments of the disclosure are described in detail with reference to the accompanying drawings. The following detailed description taken in conjunction with the accompanying drawings is intended for describing example embodiments of the disclosure, but not for representing a sole embodiment of the disclosure. The detailed description below includes specific details to convey a thorough understanding of the disclosure. However, it will be easily appreciated by one of ordinary skill in the art that embodiments of the disclosure may be practiced even without such details.

In some cases, to avoid ambiguity in concept, known structures or devices may be omitted or be shown in block diagrams while focusing on core features of each structure and device.

Hereinafter, downlink (DL) means communication from a base station to a terminal and uplink (UL) means communication from the terminal to the base station. In the downlink, a transmitter may be part of the base station, and a receiver may be part of the terminal. In the uplink, the transmitter may be part of the terminal and the receiver may be part of the base station. The base station may be expressed as a first communication device and the terminal may be expressed as a second communication device. A base station (BS) may be replaced with terms including a fixed station, a Node B, an evolved-NodeB (eNB), a Next Generation NodeB (gNB), a base transceiver system (BTS), an access point (AP), a network (5G network), an AI system, a road side unit (RSU), a vehicle, a robot, an Unmanned Aerial Vehicle (UAV), an Augmented Reality (AR) device, a Virtual Reality (VR) device, and the like. Further, the terminal may be fixed or mobile and may be replaced with terms including a User Equipment (UE), a Mobile Station (MS), a user terminal (UT), a Mobile Subscriber Station (MSS), a Subscriber Station (SS), an Advanced Mobile Station (AMS), a Wireless Terminal (WT), a Machine-Type Communication (MTC) device, a Machine-to-Machine (M2M) device, and a Device-to-Device (D2D) device, the vehicle, the robot, an AI module, the Unmanned Aerial Vehicle (UAV), the Augmented Reality (AR) device, the Virtual Reality (VR) device, and the like.

The following technology may be used in various wireless access systems, such as code division multiple access (CDMA), frequency division multiple access (FDMA), time division multiple access (TDMA), orthogonal frequency division multiple access (OFDMA), single carrier-FDMA (SC-FDMA), non-orthogonal multiple access (NOMA), and the like. The CDMA may be implemented by radio technology such as universal terrestrial radio access (UTRA) or CDMA2000. The TDMA may be implemented by radio technology such as global system for mobile communications (GSM)/general packet radio service (GPRS)/enhanced data rates for GSM evolution (EDGE). The OFDMA may be implemented as radio technology such as IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802-20, E-UTRA (evolved UTRA), and the like. The UTRA is a part of a universal mobile telecommunication system (UMTS). 3rd generation partnership project (3GPP) long term evolution (LTE), as a part of an evolved UMTS (E-UMTS) using E-UTRA, adopts the OFDMA in the downlink and the SC-FDMA in the uplink. LTE-A (advanced) is the evolution of 3GPP LTE.

For clarity of description, the present disclosure is described based on the 3GPP communication system (e.g., LTE-A or NR), but the technical spirit of the present disclosure are not limited thereto. LTE means technology after 3GPP TS 36.xxx Release 8. In detail, LTE technology after 3GPP TS 36.xxx Release 10 is referred to as the LTE-A and LTE technology after 3GPP TS 36.xxx Release 13 is referred to as the LTE-A pro. The 3GPP NR means technology after TS 38.xxx Release 15. The LTE/NR may be referred to as a 3GPP system. “xxx” means a standard document detail number. The LTE/NR may be collectively referred to as the 3GPP system. Matters disclosed in a standard document published before the present disclosure may refer to a background art, terms, abbreviations, etc., used for describing the present disclosure. For example, the following documents may be referenced.

3GPP LTE

36.211: Physical channels and modulation

36.212: Multiplexing and channel coding

36.213: Physical layer procedures

36.300: Overall description

36.331: Radio Resource Control (RRC)

3GPP NR

38.211: Physical channels and modulation

38.212: Multiplexing and channel coding

38.213: Physical layer procedures for control

38.214: Physical layer procedures for data

38.300: NR and NG-RAN Overall Description

36.331: Radio Resource Control (RRC) protocol specification

As more and more communication devices require larger communication capacity, there is a need for improved mobile broadband communication compared to the existing radio access technology (RAT). Further, massive machine type communications (MTCs), which provide various services anytime and anywhere by connecting many devices and objects, are one of the major issues to be considered in the next generation communication. In addition, a communication system design considering a service/UE sensitive to reliability and latency is being discussed. As such, the introduction of next-generation radio access technology considering enhanced mobile broadband communication (eMBB), massive MTC (mMTC), ultra-reliable and low latency communication (URLLC) is discussed, and in the present disclosure, the technology is called NR for convenience. The NR is an expression representing an example of 5G radio access technology (RAT).

Three major requirement areas of 5G include (1) an enhanced mobile broadband (eMBB) area, (2) a massive machine type communication (mMTC) area and (3) an ultra-reliable and low latency communications (URLLC) area.

Some use cases may require multiple areas for optimization, and other use case may be focused on only one key performance indicator (KPI). 5G support such various use cases in a flexible and reliable manner

eMBB is far above basic mobile Internet access and covers media and entertainment applications in abundant bidirectional tasks, cloud or augmented reality. Data is one of key motive powers of 5G, and dedicated voice services may not be first seen in the 5G era. In 5G, it is expected that voice will be processed as an application program using a data connection simply provided by a communication system. Major causes for an increased traffic volume include an increase in the content size and an increase in the number of applications that require a high data transfer rate. Streaming service (audio and video), dialogue type video and mobile Internet connections will be used more widely as more devices are connected to the Internet. Such many application programs require connectivity always turned on in order to push real-time information and notification to a user. A cloud storage and application suddenly increases in the mobile communication platform, and this may be applied to both business and entertainment. Furthermore, cloud storage is a special use case that tows the growth of an uplink data transfer rate. 5G is also used for remote business of cloud. When a tactile interface is used, further lower end-to-end latency is required to maintain excellent user experiences. Entertainment, for example, cloud game and video streaming are other key elements which increase a need for the mobile broadband ability. Entertainment is essential in the smartphone and tablet anywhere including high mobility environments, such as a train, a vehicle and an airplane. Another use case is augmented reality and information search for entertainment. In this case, augmented reality requires very low latency and an instant amount of data.

Furthermore, one of the most expected 5G use case relates to a function capable of smoothly connecting embedded sensors in all fields, that is, mMTC. Until 2020, it is expected that potential IoT devices will reach 20.4 billions. The industry IoT is one of areas in which 5G performs major roles enabling smart city, asset tracking, smart utility, agriculture and security infra.

URLLC includes a new service which will change the industry through remote control of major infra and a link having ultra reliability/low available latency, such as a self-driving vehicle. A level of reliability and latency is essential for smart grid control, industry automation, robot engineering, drone control and adjustment.

Multiple use cases are described more specifically.

5G may supplement fiber-to-the-home (FTTH) and cable-based broadband (or DOCSIS) as means for providing a stream evaluated from gigabits per second to several hundreds of mega bits per second. Such fast speed is necessary to deliver TV with resolution of 4K or more (6K, 8K or more) in addition to virtual reality and augmented reality. Virtual reality (VR) and augmented reality (AR) applications include immersive sports games. A specific application program may require a special network configuration. For example, in the case of VR game, in order for game companies to minimize latency, a core server may need to be integrated with the edge network server of a network operator.

An automotive is expected to be an important and new motive power in 5G, along with many use cases for the mobile communication of an automotive. For example, entertainment for a passenger requires a high capacity and a high mobility mobile broadband at the same time. The reason for this is that future users continue to expect a high-quality connection regardless of their location and speed. Another use example of the automotive field is an augmented reality dashboard. The augmented reality dashboard overlaps and displays information, identifying an object in the dark and notifying a driver of the distance and movement of the object, over a thing seen by the driver through a front window. In the future, a wireless module enables communication between automotives, information exchange between an automotive and a supported infrastructure, and information exchange between an automotive and other connected devices (e.g., devices accompanied by a pedestrian). A safety system guides alternative courses of a behavior so that a driver can drive more safely, thereby reducing a danger of an accident. A next step will be a remotely controlled or self-driven vehicle. This requires very reliable, very fast communication between different self-driven vehicles and between an automotive and infra. In the future, a self-driven vehicle may perform all driving activities, and a driver will be focused on things other than traffic, which cannot be identified by an automotive itself. Technical requirements of a self-driven vehicle require ultra-low latency and ultra-high speed reliability so that traffic safety is increased up to a level which cannot be achieved by a person.

A smart city and smart home mentioned as a smart society will be embedded as a high-density radio sensor network. The distributed network of intelligent sensors will identify the cost of a city or home and a condition for energy-efficient maintenance. A similar configuration may be performed for each home. All of a temperature sensor, a window and heating controller, a burglar alarm and home appliances are wirelessly connected. Many of such sensors are typically a low data transfer rate, low energy and a low cost. However, for example, real-time HD video may be required for a specific type of device for surveillance.

The consumption and distribution of energy including heat or gas are highly distributed and thus require automated control of a distributed sensor network. A smart grid collects information, and interconnects such sensors using digital information and a communication technology so that the sensors operate based on the information. The information may include the behaviors of a supplier and consumer, and thus the smart grid may improve the distribution of fuel, such as electricity, in an efficient, reliable, economical, production-sustainable and automated manner The smart grid may be considered to be another sensor network having small latency.

A health part owns many application programs which reap the benefits of mobile communication. A communication system can support remote treatment providing clinical treatment at a distant place. This helps to reduce a barrier for the distance and can improve access to medical services which are not continuously used at remote farming areas. Furthermore, this is used to save life in important treatment and an emergency condition. A radio sensor network based on mobile communication can provide remote monitoring and sensors for parameters, such as the heart rate and blood pressure.

Radio and mobile communication becomes increasingly important in the industry application field. Wiring requires a high installation and maintenance cost. Accordingly, the possibility that a cable will be replaced with reconfigurable radio links is an attractive opportunity in many industrial fields. However, to achieve the possibility requires that a radio connection operates with latency, reliability and capacity similar to those of the cable and that management is simplified. Low latency and a low error probability is a new requirement for a connection to 5G.

Logistics and freight tracking is an important use case for mobile communication, which enables the tracking inventory and packages anywhere using a location-based information system. The logistics and freight tracking use case typically requires a low data speed, but a wide area and reliable location information.

In a New RAT system including NR uses an OFDM transmission scheme or a similar transmission scheme thereto. The new RAT system may follow OFDM parameters different from OFDM parameters of LTE. Alternatively, the new RAT system may follow numerology of conventional LTE/LTE-A as it is or have a larger system bandwidth (e.g., 100 MHz). Alternatively, one cell may support a plurality of numerologies. In other words, UEs that operate with different numerologies may coexist in one cell.

The numerology corresponds to one subcarrier spacing in a frequency domain. By scaling a reference subcarrier spacing by an integer N, different numerologies can be defined.

Definition of Terms

eLTE eNB: The eLTE eNB is the evolution of eNB that supports connectivity to EPC and NGC.

gNB: A node which supports the NR as well as connectivity to NGC.

New RAN: A radio access network which supports either NR or E-UTRA or interfaces with the NGC.

Network slice: A network slice is a network defined by the operator customized to provide an optimized solution for a specific market scenario which demands specific requirements with end-to-end scope.

Network function: A network function is a logical node within a network infrastructure that has well-defined external interfaces and well-defined functional behavior.

NG-C: A control plane interface used at an NG2 reference point between new RAN and NGC.

NG-U: A user plane interface used at an NG3 reference point between new RAN and NGC.

Non-standalone NR: A deployment configuration where the gNB requires an LTE eNB as an anchor for control plane connectivity to EPC, or requires an eLTE eNB as an anchor for control plane connectivity to NGC.

Non-standalone E-UTRA: A deployment configuration where the eLTE eNB requires a gNB as an anchor for control plane connectivity to NGC.

User plane gateway: An end point of NG-U interface.

Overview of System

FIG. 1 illustrates an example overall NR system structure to which a method as proposed in the disclosure may apply.

Referring to FIG. 1, an NG-RAN is constituted of gNBs to provide a control plane (RRC) protocol end for user equipment (UE) and NG-RA user plane (new AS sublayer/PDCP/RLC/MAC/PHY).

The gNBs are mutually connected via an Xn interface.

The gNBs are connected to the NGC via the NG interface.

More specifically, the gNB connects to the access and mobility management function (AMF) via the N2 interface and connects to the user plane function (UPF) via the N3 interface.

New RAT (NR) Numerology and Frame Structure

In the NR system, a number of numerologies may be supported. Here, the numerology may be defined by the subcarrier spacing and cyclic prefix (CP) overhead. At this time, multiple subcarrier spacings may be derived by scaling the basic subcarrier spacing by integer N (or, μ). Further, although it is assumed that a very low subcarrier spacing is not used at a very high carrier frequency, the numerology used may be selected independently from the frequency band.

Further, in the NR system, various frame structures according to multiple numerologies may be supported.

Hereinafter, an orthogonal frequency division multiplexing (OFDM) numerology and frame structure that may be considered in the NR system is described.

The multiple OFDM numerologies supported in the NR system may be defined as shown in Table 1.

TABLE 1 μ Δƒ = 2^(μ) · 15[kHz] Cyclic prefix 0 15 Normal 1 30 Normal 2 60 Normal, Extended 3 120 Normal 4 240 Normal

NR supports multiple numerologies (or subcarrier spacings (SCS)) for supporting various 5G services. For example, if SCS is 15 kHz, NR supports a wide area in typical cellular bands. If SCS is 30 kHz/60 kHz, NR supports a dense urban, lower latency and a wider carrier bandwidth. If SCS is 60 kHz or higher, NR supports a bandwidth greater than 24.25 GHz in order to overcome phase noise.

An NR frequency band is defined as a frequency range of two types FR1 and FR2. The FR1 and the FR2 may be configured as in Table 1 below. Furthermore, the FR2 may mean a millimeter wave (mmW).

TABLE 2 Frequency range Corresponding Subcarrier designation frequency range Spacing FR1 410 MHz-7125 MHz 15, 30, 60 kHz FR2 24250 MHz-52600 MHz 60, 120, 240 kHz

With regard to the frame structure in the NR system, the size of various fields in the time domain is expressed as a multiple of time unit of T_(s)=1/(Δf_(max)·N_(f)), where Δf_(max)=480·10³, and N_(f)=4096. Downlink and uplink transmissions is constituted of a radio frame with a period of T_(f)=(Δf_(max)N_(f)/100)·T_(s)=10 ms. Here, the radio frame is constituted of 10 subframes each of which has a period of T_(sf)=(Δf_(max)N_(f)/1000)·T_(s)=1 ms. In this case, one set of frames for uplink and one set of frames for downlink may exist.

FIG. 2 illustrates a relationship between an uplink frame and downlink frame in a wireless communication system to which a method described in the present disclosure is applicable.

As illustrated in FIG. 2, uplink frame number i for transmission from the user equipment (UE) should begin T_(TA)=N_(TA)T_(s) earlier than the start of the downlink frame by the UE.

For numerology μ, slots are numbered in ascending order of n_(s) ^(μ) ∈ {0, . . . , N_(subframe) ^(slots,μ)−1} in the subframe and in ascending order of n_(s,f) ^(μ) ∈ {0, . . . , N_(frame) ^(slots,μ)−1} in the radio frame. One slot includes consecutive OFDM symbols of N_(symb) ^(μ), and N_(symb) ^(μ) is determined according to the used numerology and slot configuration. In the subframe, the start of slot n_(s) ^(μ) is temporally aligned with the start of n_(s) ^(μ)N_(symb) ^(μ).

Not all UEs are able to transmit and receive at the same time, and this means that not all OFDM symbols in a downlink slot or an uplink slot are available to be used.

Table 3 represents the number N_(symb) ^(slot) of OFDM symbols per slot, the number slot N_(slot) ^(frame,μ) of slots per radio frame, and the number N_(slot) ^(subframe,μ) slot of slots per subframe in a normal CP. Table 4 represents the number of OFDM symbols per slot, the number of slots per radio frame, and the number of slots per subframe in an extended CP.

TABLE 3 μ N_(symb) ^(slot) N_(slot) ^(frame,μ) N_(slot) ^(subframe,μ) 0 14 10 1 1 14 20 2 2 14 40 4 3 14 80 8 4 14 160 16

TABLE 4 μ N_(symb) ^(slot) N_(slot) ^(frame,μ) N_(slot) ^(subframe,μ) 2 12 40 4

FIG. 3 illustrates an example of a frame structure in a NR system. FIG. 3 is merely for convenience of explanation and does not limit the scope of the present disclosure.

In Table 4, in case of μ=2, i.e., as an example in which a subcarrier spacing (SCS) is 60 kHz, one subframe (or frame) may include four slots with reference to Table 3, and one subframe={1, 2, 4} slots shown in FIG. 3, for example, the number of slot(s) that may be included in one subframe may be defined as in Table 3.

Further, a mini-slot may consist of 2, 4, or 7 symbols, or may consist of more symbols or less symbols.

In regard to physical resources in the NR system, an antenna port, a resource grid, a resource element, a resource block, a carrier part, etc. may be considered.

Hereinafter, the above physical resources that can be considered in the NR system are described in more detail.

First, in regard to an antenna port, the antenna port is defined so that a channel over which a symbol on an antenna port is conveyed can be inferred from a channel over which another symbol on the same antenna port is conveyed. When large-scale properties of a channel over which a symbol on one antenna port is conveyed can be inferred from a channel over which a symbol on another antenna port is conveyed, the two antenna ports may be regarded as being in a quasi co-located or quasi co-location (QC/QCL) relation. Here, the large-scale properties may include at least one of delay spread, Doppler spread, frequency shift, average received power, and received timing.

FIG. 4 illustrates an example of a resource grid supported in a wireless communication system to which a method proposed in the present disclosure is applicable.

Referring to FIG. 4, a resource grid consists of N_(RB) ^(μ)N_(sc) ^(RB) subcarriers on a frequency domain, each subframe consisting of 14·2μ OFDM symbols, but the present disclosure is not limited thereto.

In the NR system, a transmitted signal is described by one or more resource grids, consisting of N_(RB) ^(μ)N_(sc) ^(RB) subcarriers, and 2^(μ)N_(symb) ^((μ)) OFDM symbols, where N_(RB) ^(μ)≤N_(RB) ^(max,μ). N_(RB) ^(max,μ) denotes a maximum transmission bandwidth and may change not only between numerologies but also between uplink and downlink.

In this case, as illustrated in FIG. 5, one resource grid may be configured per numerology μ and antenna port p.

FIG. 5 illustrates examples of a resource grid per antenna port and numerology to which a method proposed in the present disclosure is applicable.

Each element of the resource grid for the numerology μ and the antenna port p is called a resource element and is uniquely identified by an index pair (k,l), where k=0, . . . , N_(RB) ^(μ)N_(sc) ^(RB)−1 is an index on a frequency domain, and l=0, . . . , 2^(μ)N_(symb) ^((μ))−1 refers to a location of a symbol in a subframe. The index pair (k, l) is used to refer to a resource element in a slot, where l=0, . . . , N_(symb) ^(μ)−1.

The resource element (k,l) for the numerology μ and the antenna port p corresponds to a complex value a_(k,l) ^((p,μ)). When there is no risk for confusion or when a specific antenna port or numerology is not specified, the indexes p and μ may be dropped, and as a result, the complex value may be a_(k,l) ^((p)) or a_(k,l) .

Further, a physical resource block is defined as N_(sc) ^(RB)=12 consecutive subcarriers in the frequency domain.

Point A serves as a common reference point of a resource block grid and may be obtained as follows.

offsetToPointA for PCell downlink represents a frequency offset between the point A and a lowest subcarrier of a lowest resource block that overlaps a SS/PBCH block used by the UE for initial cell selection, and is expressed in units of resource blocks assuming 15 kHz subcarrier spacing for FR1 and 60 kHz subcarrier spacing for FR2.

absoluteFrequencyPointA represents frequency-location of the point A expressed as in absolute radio-frequency channel number (ARFCN).

The common resource blocks are numbered from 0 and upwards in the frequency domain for subcarrier spacing configuration μ.

The center of subcarrier 0 of common resource block 0 for the subcarrier spacing configuration μ coincides with ‘point A’. A common resource block number n_(CRB) ^(μ) in the frequency domain and resource elements (k, l) for the subcarrier spacing configuration μ may be given by the following Equation 1.

$\begin{matrix} {n_{CRB}^{\mu} = \left\lfloor \frac{k}{N_{sc}^{RB}} \right\rfloor} & \left\lbrack {{Equation}1} \right\rbrack \end{matrix}$

Here, k may be defined relative to the point A so that k=0 corresponds to a subcarrier centered around the point A. Physical resource blocks are defined within a bandwidth part (BWP) and are numbered from 0 to N_(BWP,i) ^(size)−1 where i is No. of the BWP. A relation between the physical resource block n_(PRB) in BWP i and the common resource block n_(CRB) may be given by the following Equation 2.

n _(CRB) =n _(PRB) +N _(BWP,i) ^(start)   [Equation 2]

Here, N_(BWP,i) ^(start) may be the common resource block where the BWP starts relative to the common resource block 0.

Physical Channel and General Signal Transmission

FIG. 6 illustrates physical channels and general signal transmission used in a 3GPP system. In a wireless communication system, the UE receives information from the eNB through Downlink (DL) and the UE transmits information from the eNB through Uplink (UL). The information which the eNB and the UE transmit and receive includes data and various control information and there are various physical channels according to a type/use of the information which the eNB and the UE transmit and receive.

When the UE is powered on or newly enters a cell, the UE performs an initial cell search operation such as synchronizing with the eNB (S601). To this end, the UE may receive a Primary Synchronization Signal (PSS) and a Secondary Synchronization Signal (SSS) from the eNB and synchronize with the eNB and acquire information such as a cell ID or the like. Thereafter, the UE may receive a Physical Broadcast Channel (PBCH) from the eNB and acquire in-cell broadcast information. Meanwhile, the UE receives a Downlink Reference Signal (DL RS) in an initial cell search step to check a downlink channel status.

A UE that completes the initial cell search receives a Physical Downlink Control Channel (PDCCH) and a Physical Downlink Control Channel (PDSCH) according to information loaded on the PDCCH to acquire more specific system information (S602).

Meanwhile, when there is no radio resource first accessing the eNB or for signal transmission, the UE may perform a Random Access Procedure (RACH) to the eNB (S603 to S606). To this end, the UE may transmit a specific sequence to a preamble through a Physical Random Access Channel (PRACH) (S603 and S605) and receive a response message (Random Access Response (RAR) message) for the preamble through the PDCCH and a corresponding PDSCH. In the case of a contention based RACH, a Contention Resolution Procedure may be additionally performed (S606).

The UE that performs the above procedure may then perform PDCCH/PDSCH reception (S607) and Physical Uplink Shared Channel (PUSCH)/Physical Uplink Control Channel (PUCCH) transmission (S608) as a general uplink/downlink signal transmission procedure. In particular, the UE may receive Downlink Control Information (DCI) through the PDCCH. Here, the DCI may include control information such as resource allocation information for the UE and formats may be differently applied according to a use purpose.

Meanwhile, the control information which the UE transmits to the eNB through the uplink or the UE receives from the eNB may include a downlink/uplink ACK/NACK signal, a Channel Quality Indicator (CQI), a Precoding Matrix Index (PMI), a Rank Indicator (RI), and the like. The UE may transmit the control information such as the CQI/PMI/RI, etc., through the PUSCH and/or PUCCH.

Beam Management (BM)

A BM procedure as layer 1 (L1)/layer 2 (L2) procedures for acquiring and maintaining a set of base station (e.g., gNB, TRP, etc.) and/or terminal (e.g., UE) beams which may be used for downlink (DL) and uplink (UL) transmission/reception may include the following procedures and terms.

Beam measurement: Operation of measuring characteristics of a beam forming signal received by the eNB or UE.

Beam determination: Operation of selecting a transmit (Tx) beam/receive (Rx) beam of the eNB or UE by the eNB or UE.

Beam sweeping: Operation of covering a spatial region using the transmit and/or receive beam for a time interval by a predetermined scheme.

Beam report: Operation in which the UE reports information of a beamformed signal based on beam measurement.

The BM procedure may be divided into (1) a DL BM procedure using a synchronization signal (SS)/physical broadcast channel (PBCH) Block or CSI-RS and (2) a UL BM procedure using a sounding reference signal (SRS). Further, each BM procedure may include Tx beam sweeping for determining the Tx beam and Rx beam sweeping for determining the Rx beam.

Downlink Beam Management (DL BM)

The DL BM procedure may include (1) transmission of beamformed DL reference signals (RSs) (e.g., CIS-RS or SS Block (SSB)) of the eNB and (2) beam reporting of the UE.

Here, the beam reporting a preferred DL RS identifier (ID)(s) and L1-Reference Signal Received Power (RSRP).

The DL RS ID may be an SSB Resource Indicator (SSBRI) or a CSI-RS Resource Indicator (CRI).

FIG. 7 illustrates an example of beamforming using a SSB and a CSI-RS.

As illustrated in FIG. 7, a SSB beam and a CSI-RS beam may be used for beam measurement. A measurement metric is L1-RSRP per resource/block. The SSB may be used for coarse beam measurement, and the CSI-RS may be used for fine beam measurement. The SSB may be used for both Tx beam sweeping and Rx beam sweeping. The Rx beam sweeping using the SSB may be performed while the UE changes Rx beam for the same SSBRI across multiple SSB bursts. One SS burst includes one or more SSBs, and one SS burst set includes one or more SSB bursts.

DL BM Related Beam Indication

A UE may be RRC-configured with a list of up to M candidate transmission configuration indication (TCI) states at least for the purpose of quasi co-location (QCL) indication, where M may be 64.

Each TCI state may be configured with one RS set. Each ID of DL RS at least for the purpose of spatial QCL (QCL Type D) in an RS set may refer to one of DL RS types such as SSB, P-CSI RS, SP-CSI RS, A-CSI RS, etc.

Initialization/update of the ID of DL RS(s) in the RS set used at least for the purpose of spatial QCL may be performed at least via explicit signaling.

Table 5 represents an example of TCI-State IE.

The TCI-State IE associates one or two DL reference signals (RSs) with corresponding quasi co-location (QCL) types.

TABLE 5   -- ASN1START -- TAG-TCI-STATE-START TCI-State ::=             SEQUENCE {  tci-StateId               TCI-StateId,  qcl-Type1              QCL-Info,  qcl-Type2              QCL-info  ... } QCC-Info ::=          SEQUENCE {  cell                  ServCellIndex  bwp-Id                BWP-Id  referenceSignal              CHOICE {   csi-rs                NZP-CSI-RS-ResourceId,   ssb                   SSB-Index  },  qcl-Type              ENUMERATED {typeA typeB, typeC, typeD},  ... } -- TAG-TCI-STATE-STOP -- ASN1STOP

In Table 5, bwp-Id parameter represents a DL BWP where the RS is located, cell parameter represents a carrier where the RS is located, and reference signal parameter represents reference antenna port(s) which is a source of quasi co-location for corresponding target antenna port(s) or a reference signal including the one. The target antenna port(s) may be CSI-RS, PDCCH DMRS, or PDSCH DMRS. As an example, in order to indicate QCL reference RS information on NZP CSI-RS, the corresponding TCI state ID may be indicated to NZP CSI-RS resource configuration information. As another example, in order to indicate QCL reference information on PDCCH DMRS antenna port(s), the TCI state ID may be indicated to each CORESET configuration. As another example, in order to indicate QCL reference information on PDSCH DMRS antenna port(s), the TCI state ID may be indicated via DCI.

Quasi-Co Location (QCL)

The antenna port is defined so that a channel over which a symbol on an antenna port is conveyed can be inferred from a channel over which another symbol on the same antenna port is conveyed. When properties of a channel over which a symbol on one antenna port is conveyed can be inferred from a channel over which a symbol on another antenna port is conveyed, the two antenna ports may be considered as being in a quasi co-located or quasi co-location (QC/QCL) relationship.

The channel properties include one or more of delay spread, Doppler spread, frequency/Doppler shift, average received power, received timing/average delay, and spatial RX parameter. The spatial Rx parameter means a spatial (reception) channel property parameter such as an angle of arrival.

The UE may be configured with a list of up to M TCI-State configurations within the higher layer parameter PDSCH-Config to decode PDSCH according to a detected PDCCH with DCI intended for the corresponding UE and a given serving cell, where M depends on UE capability.

Each TCI-State contains parameters for configuring a quasi co-location relationship between one or two DL reference signals and the DM-RS ports of the PDSCH.

The quasi co-location relationship is configured by the higher layer parameter qcl-Type1 for the first DL RS and qcl-Type2 for the second DL RS (if configured). For the case of two DL RSs, the QCL types are not be the same, regardless of whether the references are to the same DL RS or different DL RSs.

The quasi co-location types corresponding to each DL RS are given by the higher layer parameter qcl-Type of QCL-Info and may take one of the following values:

‘QCL-TypeA’: {Doppler shift, Doppler spread, average delay, delay spread}

‘QCL-TypeB’: {Doppler shift, Doppler spread}

‘QCL-TypeC’: {Doppler shift, average delay}

‘QCL-TypeD’: {Spatial Rx parameter}

For example, if a target antenna port is a specific NZP CSI-RS, the corresponding NZP CSI-RS antenna ports may be indicated/configured to be QCLed with a specific TRS in terms of QCL-TypeA and with a specific SSB in terms of QCL-TypeD. The UE receiving the indication/configuration may receive the corresponding NZP CSI-RS using the Doppler or delay value measured in the QCL-TypeA TRS and apply the Rx beam used for QCL-TypeD SSB reception to the reception of the corresponding NZP CSI-RS reception.

The UE may receive an activation command by MAC CE signaling used to map up to eight TCI states to the codepoint of the DCI field ‘Transmission Configuration Indication’.

UL BM Procedure

UL BM may be configured such that beam reciprocity (or beam correspondence) between Tx beam and Rx beam is established or not established depending on the UE implementation. If the beam reciprocity between Tx beam and Rx beam is established in both a base station and a UE, a UL beam pair may be adjusted via a DL beam pair. However, if the beam reciprocity between Tx beam and Rx beam is not established in any one of the base station and the UE, a process for determining the UL beam pair is necessary separately from determining the DL beam pair.

Even when both the base station and the UE maintain the beam correspondence, the base station may use a UL BM procedure for determining the DL Tx beam even if the UE does not request a report of a (preferred) beam.

The UM BM may be performed via beamformed UL SRS transmission, and whether to apply UL BM of a SRS resource set is configured by the (higher layer parameter) usage. If the usage is set to ‘BeamManagement (BM)’, only one SRS resource may be transmitted to each of a plurality of SRS resource sets in a given time instant.

The UE may be configured with one or more sounding reference symbol (SRS) resource sets configured by (higher layer parameter) SRS-ResourceSet (via higher layer signaling, RRC signaling, etc.). For each SRS resource set, the UE may be configured with K≥1 SRS resources (higher later parameter SRS-resource), where K is a natural number, and a maximum value of K is indicated by SRS_capability.

In the same manner as the DL BM, the UL BM procedure may be divided into a UE's Tx beam sweeping and a base station's Rx beam sweeping.

FIG. 8 illustrates an example of an UL BM procedure using a SRS.

More specifically, (a) of FIG. 8 illustrates an Rx beam determination procedure of a base station, and (a) of FIG. 8 illustrates a Tx beam sweeping procedure of a UE.

FIG. 9 is a flow chart illustrating an example of an UL BM procedure using a SRS.

The UE receives, from the base station, RRC signaling (e.g., SRS-Config IE) including (higher layer parameter) usage parameter set to ‘beam management’ in S910.

Table 6 represents an example of SRS-Config information element (IE), and the SRS-Config IE is used for SRS transmission configuration. The SRS-Config IE contains a list of SRS-Resources and a list of SRS-Resource sets. Each SRS resource set means a set of SRS resources.

The network may trigger transmission of the SRS resource set using configured aperiodicSRS-ResourceTrigger (L1 DCI).

TABLE 6 -- ASN1START -- TAG-MAC-CELL-GROUP-CONFIG-START SRS-Config ::=               SEQUENCE {   srs-ResourceSetToReleaseList           SEQUENCE (SIZE(1..maxNrofSRS- ResourceSets)) OF SRS-ResourceSetId          OPTIONAL,   -- Need N   srs-ResourceSetToAddModIist         SEQUENCE (SIZE(1..maxNrofSRS- ResourceSets)) OF SRS-ResourceSet            OPTIONAL,   -- Need N   srs-ResourceToReleaseList             SEQUENCE (SIZE(1..maxNrofSRS- Resources)) OF SRS-ResourceId              OPTIONAL, -- Need N   srs-ResoureeToAddModList          SEQUENCE (SIZE(1..maxNrofSRS- Resources)) OF SRS-Resource             OPTIONAL,  -- Need N   tpc-Accumulation               ENUMERATED {disabled}   ... } SRS-ResourceSet ::=              SEQUENCE {   srs-ResourceSetId               SRS-ResourceSetId,   srs-ResourceIdList               SEQUENCE (SIZE(1..maxNrofSRS- ResourcesPerSet)) OF SRS-ResourceId        OPTIONAL, -- Cond Setup   resourceType              CHOICE {     aperiodic                SEQUENCE {        aperiodicSRS-ResourceTrigger          INTEGER (1..maxNrofSRS- TriggerStates-1),        csi-RS                  NZP-CSI-RS-ResourceId        slotOffset                    INTEGER (1..32)        ...     },     semi-persistent                SEQUENCE {        associatedCSI-RS                NZP-CSI-RS-ResourceId        ...     },     periodic                 SEQUENCE {        associatedCSI-RS               NZP-CSI-RS-ResourceId     }   },   usage                    ENUMERATED {beamManagement, codebook, nonCodebook, antennaSwitching},   alpha                     Alpha   p0                     INTEGER (−202..24)   pathlossRefereceRS              CHOICE {     SSB-Index                 SSB-Index,     csi-RS-Index                NZP-CSI-RS-ReseurceId SRS-SpatialRelationInfo ::=      SEQUENCE {   servingCellId            ServCellIndex   referenceSignaI         CHOICE {     ssb-Index              SSE-Index,     csi-RS-Index            NZP-CSI-RS-ResoucceId,     srs                  SEQUENCE {        resourceId                SRS-ResourceId,        uplinkBWP             BWP-Id     }   } } SRS-ResourceId ::=              INTEGER (0..maxNrofSRS-Resources-1)

In Table 6, usage refers to a higher layer parameter to indicate whether the SRS resource set is used for beam management or is used for codebook based or non-codebook based transmission. The usage parameter corresponds to L1 parameter ‘SRS-SetUse’. ‘spatialRelationInfo’ is a parameter representing a configuration of spatial relation between a reference RS and a target SRS. The reference RS may be SSB, CSI-RS, or SRS which corresponds to L1 parameter ‘SRS-SpatialRelationInfo’. The usage is configured per SRS resource set.

The UE determines the Tx beam for the SRS resource to be transmitted based on SRS-SpatialRelation Info contained in the SRS-Config IE in S920. The SRS-SpatialRelation Info is configured per SRS resource and indicates whether to apply the same beam as the beam used for SSB, CSI-RS, or SRS per SRS resource. Further, SRS-SpatialRelationInfo may be configured or not configured in each SRS resource.

If the SRS-SpatialRelationInfo is configured in the SRS resource, the same beam as the beam used for SSB, CSI-RS or SRS is applied for transmission. However, if the SRS-SpatialRelationInfo is not configured in the SRS resource, the UE randomly determines the Tx beam and transmits the SRS via the determined Tx beam in S930.

More specifically, for P-SRS with ‘SRS-ResourceConfigType’ set to ‘periodic’:

i) if SRS-SpatialRelationInfo is set to ‘SSB/PBCH,’ the UE transmits the corresponding SRS resource with the same spatial domain transmission filter (or generated from the corresponding filter) as the spatial domain Rx filter used for the reception of the SSB/PBCH; or

ii) if SRS-SpatialRelationInfo is set to ‘CSI-RS,’ the UE transmits the SRS resource with the same spatial domain transmission filter used for the reception of the periodic CSI-RS or SP CSI-RS; or

iii) if SRS-SpatialRelationInfo is set to ‘SRS,’ the UE transmits the SRS resource with the same spatial domain transmission filter used for the transmission of the periodic SRS.

Even if ‘SRS-ResourceConfigType’ is set to ‘SP-SRS’ or ‘AP-SRS,’ the beam determination and transmission operations may be applied similar to the above.

Additionally, the UE may receive or may not receive feedback for the SRS from the base station, as in the following three cases in S940.

i) If Spatial_Relation_Info is configured for all the SRS resources within the SRS resource set, the UE transmits the SRS with the beam indicated by the base station. For example, if the Spatial_Relation_Info indicates all the same SSB, CRI, or SRI, the UE repeatedly transmits the SRS with the same beam. This case corresponds to (a) of FIG. 8 as the usage for the base station to select the Rx beam.

ii) The Spatial_Relation_Info may not be configured for all the SRS resources within the SRS resource set. In this case, the UE may perform transmission while freely changing SRS beams. That is, this case corresponds to (b) of FIG. 8 as the usage for the UE to sweep the Tx beam.

iii) The Spatial_Relation_Info may be configured for only some SRS resources within the SRS resource set. In this case, the UE may transmit the configured SRS resources with the indicated beam, and transmit the SRS resources, for which Spatial_Relation_Info is not configured, by randomly applying the Tx beam.

FIG. 10 is a flowchart showing an example of an uplink transmission/reception operation to which a method proposed in the present disclosure may be applied.

Referring to FIG. 10, the eNB schedules uplink transmission such as the frequency/time resource, the transport layer, an uplink precoder, the MCS, etc., (S1010). In particular, the eNB may determine a beam for PUSCH transmission of the UE through the aforementioned operations.

The UE receives DCI for downlink scheduling (i.e., including scheduling information of the PUSCH) on the PDCCH (S1020).

DCI format 0_0 or 0_1 may be used for the uplink scheduling and in particular, DCI format 0_1 includes the following information.

Identifier for DCI formats, UL/Supplementary uplink (SUL) indicator, Bandwidth part indicator, Frequency domain resource assignment, Time domain resource assignment, Frequency hopping flag, Modulation and coding scheme (MCS), SRS resource indicator (SRI), Precoding information and number of layers, Antenna port(s), SRS request, DMRS sequence initialization, and Uplink Shared Channel (UL-SCH) indicator.

In particular, configured SRS resources in an SRS resource set associated with higher layer parameter ‘usage’ may be indicated by an SRS resource indicator field. Further, ‘spatialRelationInfo’ may be configured for each SRS resource and a value of ‘spatialRelationInfo’ may be one of {CRI, SSB, and SRI}.

The UE transmits the uplink data to the eNB on the PUSCH (S1030).

When the UE detects a PDCCH including DCI format 0_0 or 0_1, the UE transmits the corresponding PUSCH according to the indication by the corresponding DCI.

Two transmission schemes, i.e., codebook based transmission and non-codebook based transmission are supported for PUSCH transmission:

i) When higher layer parameter txConfig’ is set to ‘codebook’, the UE is configured to the codebook based transmission. On the contrary, when higher layer parameter txConfig’ is set to ‘nonCodebook’, the UE is configured to the non-codebook based transmission. When higher layer parameter ‘txConfig’ is not configured, the UE does not predict that the PUSCH is scheduled by DCI format 0_1. When the PUSCH is scheduled by DCI format 0_0, the PUSCH transmission is based on a single antenna port.

In the case of the codebook based transmission, the PUSCH may be scheduled by DCI format 0_0, DCI format 0_1, or semi-statically. When the PUSCH is scheduled by DCI format 0_1, the UE determines a PUSCH transmission precoder based on the SRI, the Transmit Precoding Matrix Indicator (TPMI), and the transmission rank from the DCI as given by the SRS resource indicator and the Precoding information and number of layers field. The TPMI is used for indicating a precoder to be applied over the antenna port and when multiple SRS resources are configured, the TPMI corresponds to the SRS resource selected by the SRI. Alternatively, when the single SRS resource is configured, the TPMI is used for indicating the precoder to be applied over the antenna port and corresponds to the corresponding single SRS resource. A transmission precoder is selected from an uplink codebook having the same antenna port number as higher layer parameter ‘nrofSRS-Ports’.

When higher layer parameter ‘txConfig’ set to ‘codebook’ is configured for the UE, at least one SRS resource is configured in the UE. An SRI indicated in slot n is associated with most recent transmission of the SRS resource identified by the SRI and here, the SRS resource precedes PDCCH (i.e., slot n) carrying the SRI.

ii) In the case of the non-codebook based transmission, the PUSCH may be scheduled by DCI format 0_0, DCI format 0_1, or semi-statically. When multiple SRS resources are configured, the UE may determine the PUSCH precoder and the transmission rank based on a wideband SRI and here, the SRI is given by the SRS resource indicator in the DCI or given by higher layer parameter ‘srs-ResourceIndicator’. The UE may use one or multiple SRS resources for SRS transmission and here, the number of SRS resources may be configured for simultaneous transmission in the same RB based on the UE capability. Only one SRS port is configured for each SRS resource. Only one SRS resource may be configured to higher layer parameter ‘usage’ set to ‘nonCodebook’. The maximum number of SRS resources which may be configured for non-codebook based uplink transmission is 4. The SRI indicated in slot n is associated with most recent transmission of the SRS resource identified by the SRI and here, the SRS transmission precedes PDCCH (i.e., slot n) carrying the SRI.

Multi Panel Operation

Hereinafter, matters related to the definition of a panel in the present disclosure will be described in detail.

A “panel” referred to in the present disclosure may be based on at least one of the following definitions.

According to an embodiment, the “panel” may be interpreted/applied by being transformed into “one panel or a plurality of panels” or a “panel group”. The panel may be related to a specific characteristic (e.g., a timing advance (TA), a power control parameter, etc.). The plurality of panels may be panels having a similarity/common value in terms of the specific characteristic.

According to an embodiment, a “panel” may be interpreted/applied by being transformed into “one antenna port or a plurality of antenna ports”, “one uplink resource or a plurality of uplink resources”, an “antenna port group” or an “uplink resource group (or set)”. The antenna port or the uplink resource may be related to a specific characteristic (e.g., a timing advance (TA), a power control parameter, etc.). The plurality of antenna ports (uplink resources) may be antenna ports (uplink resources) having a similarity/common value in terms of the specific characteristic.

According to an embodiment, a “panel” may be interpreted/applied by being transformed into “one beam or a plurality of beams” or “at least one beam group (or set)”. The beam (beam group) may be related to a specific characteristic (e.g., a timing advance (TA), a power control parameter, etc.). The plurality of beams (beam groups) may be beams (beam groups) having a similarity/common value in terms of the specific characteristic.

According to an embodiment, a “panel” may be defined as a unit for a UE to configure a transmission/reception beam. For example, a “transmission panel (Tx panel)” may be defined as a unit in which a plurality of candidate transmission beams can be generated by one panel, but only one of the beams can be used for transmission at a specific time (that is, only one transmission beam (spatial relation information RS) can be used per Tx panel in order to transmit a specific uplink signal/channel).

According to an embodiment, a “panel” may refer to “a plurality antenna ports (or at least one antenna port)”, a “antenna port group” or an “uplink resource group (or set)” with common/similar uplink synchronization. Here, the “panel” may be interpreted/applied by being transformed into a generalized expression of “uplink synchronization unit (USU)”. Alternatively, the “panel” may be interpreted/applied by being transformed into a generalized expression of “uplink transmission entity (UTE)”.

Additionally, the “uplink resource (or resource group)” may be interpreted/applied by being transformed into a resource (or a resource group (set)) of a physical uplink shared channel (PUSCH)/physical uplink control channel (PUCCH)/sounding reference signal (SRS)/physical random access channel (PRACH). Conversely, a resource (resource group) of a PUSCH/PUCCH/SRS/PRACH may be interpreted/applied as an “uplink resource (or resource group)” based on the definition of the panel.

In the present disclosure, an “antenna (or antenna port)” may represent a physical or logical antenna (or antenna port).

As described above, a “panel” referred to in the present disclosure can be interpreted in various ways as “a group of UE antenna elements”, “a group of UE antenna ports”, “a group of logical antennas”, and the like. Which physical/logical antennas or antenna ports are mapped to one panel may be variously changed according to position/distance/correlation between antennas, an RF configuration and/or an antenna (port) virtualization method. The phaming process may vary according to a UE implementation method.

In addition, the “panel” referred to in the present disclosure may be interpreted/applied by being transformed into “a plurality of panels” or a “panel group” (having similarity in terms of specific characteristics).

Multi Panel Structure

Hereinafter, matters related to implementation of a multi-panel will be described.

In the implementation of a UE in a high frequency band, modeling of a UE having a plurality of panels consisting of one or a plurality of antennas is being considered (e.g., bi-directional two panels in 3GPP UE antenna modeling). Various forms may be considered in implementing such a multi-panel. This is described below in detail with reference to FIGS. 11 and 12.

FIG. 11 and FIG. 12 illustrate an example of multi-panel based on an RF switch applied to the disclosure.

A plurality of panels may be implemented based on an RF switch.

Referring to FIG. 11, only one panel may be activated at a time, and signal transmission may be impossible for a predetermined time during which the activated panel is changed (i.e., panel switching).

FIG. 12 illustrates a plurality of panels according to different implementation schemes. Each panel may have an RF chain connected thereto so that it may be activated at any time. In this case, the time taken for panel switching may be zero or very short, and depending on the modem and power amplifier configuration, multiple panels may be simultaneously activated to transmit signals simultaneously (STxMP: simultaneous transmission across multi-panel).

In a UE having a plurality of panels described above, the radio channel state may be different for each panel, and the RF/antenna configuration may be different for each panel. Therefore, a method for estimating a channel for each panel is required. In particular, 1) to measure uplink quality or manage uplink beams or 2) to measure downlink quality for each panel or manage downlink beams using channel reciprocity, the following procedure is required.

A procedure for transmitting one or a plurality of SRS resources for each panel (here, the plurality of SRS resources may be SRS resources transmitted on different beams within one panel or SRS resources repeatedly transmitted on the same beam).

For convenience of description below, a set of SRS resources transmitted based on the same usage and the same time domain behavior in the same panel is referred to as an SRS resource group. The usage may include at least one of beam management, antenna switching, codebook-based PUSCH, or non-codebook based PUSCH. The time-domain behavior may be an operation based on any one of aperiodic, semi-persistent, and periodic.

The SRS resource group may use the configuration for the SRS resource set supported in the Rel-15 NR system, as it is, or separately from the SRS resource set, one or more SRS resources (based on the same usage and time-domain behavior) may be configured as the SRS resource group. In relation to the same usage and time-domain behavior, in the case of Rel-15, a plurality of SRS resource sets may be configured only when the corresponding usage is beam management. It is defined that simultaneous transmission is impossible between SRS resources configured in the same SRS resource set, but simultaneous transmission is possible between the SRS resources belonging to different SRS resource sets.

When considering the panel implementation scheme and multi-panel simultaneous transmission as shown in FIG. 12, the concept described above in connection with the SRS resource set may be directly applied to the SRS resource group. When considering panel switching according to the panel implementation scheme according to FIG. 11, an SRS resource group may be defined separately from the SRS resource set.

For example, a specific ID may be assigned to each SRS resource such that resources having the same ID belong to the same SRS resource group (SRS resource group) and resources having different IDs belong to different resource groups.

For example, when four SRS resource sets (e.g., RRC parameter usage is configured to ‘BeamManagement’) configured for a beam management (BM) usage are configured to the UE, each SRS resource set may be configured and/or defined to correspond to each panel of the UE. As an example, when four SRS resource sets are represented by SRS resource sets A, B, C, and D, and the UE implements a total of four (transmission) panels, each SRS resource set corresponds to one (transmission) panel to perform the SRS transmission.

As an example, implementation of the UE shown in Table 7 may be possible.

TABLE 7 Maximum number of Additional constraint SRS resource sets on the maximum of across all time SRS resource sets per supported time domain behavior (periodic/ domain behavior (periodic/semi- semi-persistent/aperiodic) persistent/aperiodic) 1 1 2 1 3 1 4 2 5 2 6 2 7 4 8 4

Referring to contents of Table 7, when the UE reports (or transmits), to the BS, UE capability information in which the number of SRS resource sets which may be supported by the UE itself is 7 or 8, the corresponding UE may be configured with up to a total of four SRS resource sets (for the BM usage) from the BS. In this case, as an example, the UE may also be defined, configured, and/or indicated to perform uplink transmission by making each of the SRS resource sets (for the BM usage) correspond to each panel (transmission panel and/or reception panel) of the UE. That is, an SRS resource set(s) for a specific usage (e.g., BM usage) configured to the UE may be defined, configured, and/or indicated to correspond to the panel of the UE. As an example, when the BS (implicitly or explicitly) configures and/or indicates, to the UE, a first SRS resource set in relation to the uplink transmission (configured for the BM usage), the corresponding UE may recognize to perform the uplink transmission by using a panel related (or corresponding) to the first SRS resource set.

Further, like the UE, when the UE that supports four panels transmits each panel to correspond to one SRS resource set for the BM usage, information on the number of SRS resources configurable per SRS resource set may also be include in the capability information of the UE. Here, the number of SRS resources may correspond to the number of transmittable beams (e.g., uplink beams) per panel of the UE. For example, the UE in which four panels are implemented may be configured to perform the uplink transmission in such a manner that two uplink beams correspond to two configured RS resources, respectively for each panel.

MPUE Category (Multi Panel UE Category)

With respect to multi-panel transmission, UE category information may be defined in order for a UE to report performance information thereof related to multi-panel transmission. As an example, three multi-panel UE (MPUE) categories may be defined, and the MPUE categories may be classified according to whether a plurality of panels can be activated and/or whether transmission using a plurality of panels is possible.

In the case of the first MPUE category (MPUE category 1), in a UE in which multiple panels are implemented, only one panel may be activated at a time, and a delay for panel switching and/or activation may be set to [X]ms. For example, the delay may be set to be longer than a delay for beam switching/activation and may be set in units of symbols or slots.

In the case of the second MPUE category (MPUE category 2), in a UE in which multiple panels are implemented, multiple panels may be activated at a time, and one or more panels may be used for transmission. That is, simultaneous transmission using panels may be possible in the second MPUE category.

In the case of the third MPUE category (MPUE category 3), in a UE in which multiple panels are implemented, multiple panels may be activated at a time, but only one panel may be used for transmission.

With respect to multi-panel-based signal and/or channel transmission/reception proposed in the present disclosure, at least one of the three MPUE categories described above may be supported. For example, in Rel-16, MPUE category 3 among the following three MPUE categories may be (optionally) supported.

In addition, information on an MPUE category may be predefined on the standards or semi-statically configured according to a situation in a system (i.e., a network side or a UE side) and/or dynamically indicated. In this case, configuration/indication related to multi-panel-based signal and/or channel transmission/reception may be performed in consideration of the MPUE category.

Panel-Specific Transmission/Reception

Hereinafter, matters related to configuration/indication related to panel-specific transmission/reception will be described.

With respect to a multi-panel-based operation, transmission and reception of signals and/or channels may be panel-specifically performed. Here, “panel-specific” may mean that transmission and reception of signals and/or channels in units of panels can be performed. Panel-specific transmission/reception may also be referred to as panel-selective transmission/reception.

With respect to panel-specific transmission and reception in the multi-panel-based operation proposed in the present disclosure, a method of using identification information (e.g., an identifier (ID), an indicator, etc.) for setting and/or indicating a panel to be used for transmission and reception among one or more panels may be considered.

As an example, an ID for a panel may be used for panel selective transmission of a PUSCH, a PUCCH, an SRS, and/or a PRACH among a plurality of activated panels. The ID may be set/defined based on at least one of the following four methods (Alts 1, 2, 3, and 4).

Alt.1: ID for a panel may be an SRS resource set ID.

As an example, when the aspects according to a) to c) below are considered, it may be desirable that each UE Tx panel correspond to an SRS support set that is set in terms of UE implementation.

a) SRS resources of multiple SRS resource sets having the same time domain operation are simultaneously transmitted in the same bandwidth part (BWP).

b) Power control parameters are set in units of SRS resource sets.

c) A UE reports a maximum of 4 SRS resource sets (which may correspond to up to 4 panels) according to A supported time domain operation.

In the case of Alt.1 method, an SRS resource set related to each panel may be used for “codebook” and “non-codebook” based PUSCH transmission. In addition, a plurality of SRS resources belonging to a plurality of SRS resource sets may be selected by extending an SRI field of DCI. A mapping table between a sounding reference signal resource indicator (SRI) and an SRS resource may need to be extended to include the SRS resource in all SRS resource sets.

Alt.2: ID for a panel may be an ID (directly) associated with a reference RS resource and/or a reference RS resource set.

Alt.3: ID for a panel may be an ID directly associated with a target RS resource (reference RS resource) and/or a reference RS resource set.

In the case of Alt.3 method, configured SRS resource set(s) corresponding to one UE Tx panel can be controlled more easily, and the same panel identifier can be allocated to a plurality of SRS resource sets having different time domain operations.

Alt.4: ID for a panel may be an ID additionally set in spatial relation info (e.g., RRC parameter (SpatialRelationInfo)).

The Alt.4 method may be a method of newly adding information for indicating an ID for a panel. In this case, configured SRS resource set(s) corresponding to one UE Tx panel can be controlled more easily, and the same panel identifier can be allocated to a plurality of SRS resource sets having different time domain operations.

As an example, a method of introducing a UL TCI similarly to the existing DL TCI (Transmission Configuration Indication) may be considered. Specifically, UL TCI state definition may include a list of reference RS resources (e.g., SRS, CSI-RS and/or SSB). The current SRI field may be reused to select a UL TCI state from a configured set. Alternatively, a new DCI field (e.g., UL-TCI field) of DCI format 0_1 may be defined for the purpose of indicating the UL TCI state.

Information (e.g., panel ID, etc.) related to the above-described panel-specific transmission and reception can be transmitted through higher layer signaling (e.g., RRC message, MAC-CE, etc.) and/or lower layer signaling (e.g., L1 signaling, DCI, etc.). The information may be transmitted from a base station to a UE or from the UE to the base station according to circumstances or as necessary.

Further, the corresponding information may be set in a hierarchical manner in which a set for a candidate group is set and specific information is indicated.

Further, the above-described panel-related identification information may be set in units of a single panel or in units of multiple panels (e.g., a panel group or a panel set).

The above description (3GPP system, frame structure, NR system, etc.) can be applied in combination with methods proposed in the present disclosure which will be described later or supplemented to clarify the technical characteristics of the methods proposed in the present disclosure. The methods described below are only divided for convenience of description, and some components of one method may be substituted with some components of another method or may be applied in combination therewith.

In addition to multi-panel transmission of a transparent UE between a UE and a base station after NR Rel-16, the following operation may be considered. Specifically, in a state in which the UE and the base station recognize a multi-panel of the UE to each other, the base station may configure/indicate/schedule, to the UE, panel switching/selection based transmission or simultaneous transmission across multi-panel (STxMP), and the UE may perform it. Such a UE operation may occur in not only UL data (e.g., PUSCH) transmission of the UE but also another UL channel (e.g., PUCCH, SRS, PRACH, etc.) transmission of the UE, and simultaneous transmission across multiple panels (STxMP) may be performed between different UL channels.

In this case, if a pre-configured transmission panel is different between UL channels to which transmission based on the STxMP is configured/indicated/scheduled, the UE may transmit multiple UL channels based on the STxMP through different panels depending on a UE capability. If the pre-configured transmission panel is the same or overlaps different between the UL channels, an operation based on the STxMP may be impossible.

Based on the above-described background, the present disclosure describes a method in which a subsequent UE performs STxMP transmission for multiple UL channels depending on configuration between a base station and a UE when the base station configures/indicates/schedules, to the UE, simultaneous transmission for two or more UL channels (e.g., PUCCH, PUSCH, SRS, PRACH).

In Rel-15 NR, spatialRelationInfo may be used to indicate a transmission beam to be utilized when a base station transmits an UL channel to a UE. When the base station transmits PUCCH and SRS by configuring a DL reference signal (e.g., SSB-RI, CRI(P/SP/AP)) or an SRS (i.e., SRS resource) as a reference RS for a target UL channel and/or a target RS via RRC configuration, the base station may indicate which UL transmission beam is utilized. Further, when the base station schedules PUSCH to the UE, a transmission beam that is indicated by the base station and is used for SRS transmission is indicated as a transmission beam for the PUSCH via an SRI field and is used as a PUSCH transmission beam of the UE.

Regarding indication of a panel and/or a beam of UE in uplink transmission, a BS may configure/indicate panel-specific transmission for UL transmission for UL transmission through the following Alt.2 or Alt.3.

Alt.2: an UL-TCI framework is introduced, and UL-TCI-based signaling similar to DL beam indication supported in Rel-15 is supported.

A new panel ID may or may not be introduced.

A panel specific signaling is performed using UL-TCI state.

Alt.3: a new panel-ID is introduced. The corresponding panel-ID may be implicitly/explicitly applied to the transmission of a target RS resource/resource set, a PUCCH resource, an SRS resource or a PRACH resource.

A panel-specific signaling is performed implicitly (e.g., by DL beam reporting enhancement) or explicitly by using a new panel ID.

When signaling is explicitly performed, a panel-ID may be configured in a target RS/channel or a reference RS (e.g., DL RS resource configuration or spatial relation info).

For the panel ID, a new MAC CE may not be designated.

Table 8 below illustrates UL-TCI states based on the Alt.2.

TABLE 8 Valid UL-TCI state Source (target) Configuration (reference) RS UL RS [qcl-Type ] 1 SRS resource DM-RS for Spatial-relation (for BM) + PUCCH [panel ID] or SRS or PRACH 2 DL RS(a CSI-RS DM-RS for Spatial-relation resource or a PUCCH SSB) + [panel ID] or SRS or PRACH 3 DL RS(a CSI-RS DM-RS for Spatial-relation + resource or a PUSCH [port(s)-indication] SSB) + [panel ID] 4 DL RS(a CSI-RS DM-RS for Spatial-relation + resource or a SSB) PUSCH [port(s)-indication] and SRS resource + [panel ID] 5 SRS resource + DM-RS for Spatial-relation + [panel ID] PUSCH [port(s)-indication] 6 UL RS(a SRS for BM) DM-RS for Spatial-relation + and SRS resource + PUSCH [port(s)-indication] [panel ID]

As shown in the Table 8, an integrated framework for configuring and/or indicating, by a base station, a transmission panel/beam for an UL channel and/or an UL RS of a UE may be considered. The framework may be referred to as an UL-TCI framework for convenience of explanation, by way of example. The UL-TCI framework may be a form in which a DL-TCI framework considered in the existing one (e.g., Rel-15 NR system) is extended to UL. If it is based on the UL-TCI framework, the base station may configure, to the UE, DL RS (e.g., SSB-RI, CRI) and/or UL RS (e.g., SRS), as a reference RS or a source RS to be used/applied as a transmission beam for a target UL channel (e.g., PUCCH, PUSCH, PRACH) and/or a target UL RS (e.g., SRS), via higher layer signaling (e.g., RRC configuration). The corresponding UE may use the reference RS or the source RS configured by the base station when the target UL channel and/or the target UL RS are transmitted.

If the UL-TCI framework is applied, when compared to the existing ‘SRI based PUSCH scheduling and PUSCH beam indication’ method that must transmit an SRS of ‘CB’ or ‘non-CB’ purpose before an SRI indication for PUSCH transmission, there is an advantage of reducing overhead and delay upon PUSCH transmission beam configuration and/or indication. There is also an advantage in that the UL-TCI framework based method can be integratedly applied to all the UL channels/RSs such as PUCCH/PUSCH/PRACH/SRS.

In NR Rel-16 and after the NR Rel-16, i) in addition to a multi-panel transmission of a transparent UE between a UE and a base station, ii) it can be expected that a method will be introduced in which in a state where the UE and the base station recognize each multi-panel of the UE to each other, the base station configures/indicates/schedules, to the UE, panel switching UL transmission and/or multi-panel simultaneous UL transmission, and the UE performs it. This STxMP operation can obtain robustness of PUSCH transmission by transmitting the same transport block via/using the multi-panel upon UL data transmission (i.e., single frequency network (SFN) UL transmission) and can also obtain an effect of improving a data rate by transmitting different data to a single TRP or a multi TRP. When the existing UL channel/RS with a periodic feature collides with UL channel/RS that is dynamically indicated (i.e., triggered/scheduled by DCI), there is also an advantage in terms of resource utilization obtained by transmitting multiple UL channels/RSs without an operation that wastes resources or creates an ambiguous situation by dropping the UL channel/RS with a low priority.

The UE operation described above may be considered in UL control channel transmission and UL RS transmission as well as the uplink data transmission (e.g., PUSCH) of the UE. In particular, the present disclosure describes a method of performing STxMP transmission for multiple UL channel/RSs of a subsequent UE depending on configuration between the base station and the UE, when the base station configures/indicates/schedules, to the UE, simultaneous transmission for two or more UL channels/RSs (e.g., PUCCH, PUSCH, SRS, PRACH (e.g., PDCCH-ordered PRACH and/or PRACH in Contention Free RACH procedure)).

A method of configuring/indicating, by a base station, a transmission panel for UL channel/RS to the UE may be divided into an explicit method or an implicit method.

First, in UE transmission panel configuration/indication for recognition of transmit/receive panel of a non-transparent UE between the UE and the base station, the following explicit method may be considered.

In the same manner as the existing method performed via a higher layer parameter in which transmission beam configuration/indication for each UL channel/RS is spatialRelationInfo, transmission panel configuration/indication for each UL channel/RS of the UE may be also performed via RRC configuration. In this case, transmission panel configuration/indication for each UL channel/RS of the base station may be based on the following i) to iii).

i) A panel (e.g., panel ID) may be configured/indicated in the form of sub-parameter included in each UL channel/RS configuration RRC parameter (i.e., PUCCH-Resource, SRS-ResourceSet or SRS -Resource) IE.

ii) A panel (e.g., panel ID) may be configured/indicated in the form of sub-parameter included in an RRC parameter (i.e., PUCCH-SpatialRelationInfo, SRS-SpatialRelationInfo or UL-TCI state frame structure) IE configuring a transmission beam of each UL channel/RS.

iii) As an SRS resource (set) is configured/indicated for UL channel/RS transmission to utilize a UE panel used upon SRS transmission, a panel (e.g., panel ID) may be configured/indicated.

Next, in UE transmission panel configuration/indication for recognition of transmit/receive panel of a UE, the following implicit method may be considered. In order to utilize a UE panel used when receiving a downlink (DL) reference signal (RS) and/or DL channel in UL channel/RS transmission, the base station may configure/indicate a panel to the UE as follows.

The base station may configure/indicate DL RS and/or DL channel in the form of sub-parameter included in i) each UL channel/RS configuration RRC parameter or ii) an RRC parameter IE configuring a transmission beam of each UL channel/RS. Through this, the base station can indicate an UL panel of the UE using beam correspondence.

Proposal 1 and proposal 2 are described based on the above-described background. The following proposals are applicable to a UE with STxMP capability (in which simultaneous transmission across multiple channels (STxMP) can be performed) capable of simultaneously transmitting multiple channels/RSs across multiple panels (i.e., via/using multiple panels). Some proposals (e.g., proposals 1-2 and 1-3) do not have corresponding capability (i.e., STxMP capability), or are applicable to a UE including only one transmission panel.

As mentioned above, the UL channel described in the present disclosure can be replaced by an uplink reference signal (UL RS), and can also be replaced by an UL channel/RS. In the present disclosure, transmitting the channel may mean transmitting information/data, etc. via the channel. Further, in the present disclosure, a priority between channels may mean a priority between channel(s)/RS(s) when transmission timings between the channel(s)/RS(s) overlap.

[Proposal 1]

In a UE including one or more UL panels, if multiple UL channels are simultaneously configured/indicated/scheduled and their transmission timings overlap in a time domain, an operation of the UE may be switched by a relationship of a panel ID configured for each of the colliding UL channels (e.g., comparing the panel IDs configured to the respective UL channels and whether the panel IDs are the same). Specifically, if the panel IDs configured to the respective UL channels are different, the UE may operate according to proposal 1-1 (option 1) to be described later, otherwise the UE may operate according to proposal 1-2 (options 2-1 and 2-2) to be described later. That is, the UE operation in the options 1 and 2 to be described later may be switched through comparison of the transmission panel IDs after the collision between the UL channels.

Hereinafter, it is assumed that the number of transmissions of multiple uplink channels configured to the UE is two (e.g., UL channel 1 and UL channel 2) for convenience of explanation. However, application of embodiments according to the present disclosure is not limited thereto, and can be performed even if transmissions of two or more UL channels are configured to the UE.

[Proposal 1-1]

If panel IDs configured to respective UL channels (UL channel 1 and UL channel 2) are different, the UE may operate as follows (option 1).

If transmission timings of UL channel 1 and UL channel 2 of the UE configured/indicated/scheduled by the base station overlap each other, the UE may perform simultaneous transmission of the UL channel 1 and the UL channel 2 if transmission panels respectively configured to the UL channel 1 and the UL channel 2 are different. Here, the overlap of the transmission timings may comprise that resource transmitted via the UL channel 1 and resource transmitted via the UL channel 2 fully overlap or partially overlap in slot/symbol level.

For example, if a Panel ID configured to the UL channel 1 and a Panel ID configured to the UL channel 2 are different, the UE may perform simultaneous transmission of the UL channel 1 and the UL channel 2.

According to the existing method (not in a carrier aggregation (CA) situation), if a collision of UL channels of the UE occurs in an environment of a single cell, a deprioritized UL channel is dropped according to a priority rule.

On the other hand, according to the present embodiment, simultaneous transmission across different panels is allowed to a UE supporting (having) a STxMP capability, and thus there is an advantage in that waste of resources (related to transmission of DCI for uplink channel transmission indication/scheduling) can be reduced and efficiency of uplink transmission can increase.

[Proposal 1-2-1]

If panel IDs configured to respective UL channels (UL channel 1 and UL channel 2) are the same, the UE may operate as follows (option 2-1).

If transmission timings of the UL channel 1 and the UL channel 2 of the UE configured/indicated/scheduled by the base station overlap each other, the UE may operate according to the following i) or ii) if transmission panels respectively configured to the UL channel 1 and the UL channel 2 are the same. Here, the overlap of the transmission timings may comprise that a resource in which the UL channel 1 is transmitted and a resource in which the UL channel 2 is transmitted fully overlap or partially overlap at a slot/symbol level.

i) If the UL channel 1 and the UL channel 2 are different types of channels (e.g., PUCCH and PUSCH), the UE may transmit a channel (e.g., UL channel 1) with a high priority and may shift/delay and transmit the other channel (e.g., UL channel 2) considering a priority between the channels. The priority rule between the different UL channels may be the same as a priority rule between different UL channels in the existing method (e.g., LTE and/or NR Standard). Here, shifting/delaying and transmitting the UL channel may mean that the UL channel is transmitted in a resource shifted/delayed by a pre-configured unit (e.g., slot or symbol) in a resource in which transmission of the corresponding UL channel is configured.

ii) If the UL channel 1 and the UL channel 2 are the same type of channels (e.g., PUSCH), the UE may transmit a channel with a high priority and may shift/delay and transmit the other channel according to a priority rule that is predefined/pre-configured.

Examples of the predefined/pre-configured priority rule are as follows.

1) A UL channel scheduled via a lowest CORESET (i.e., CORESET to which the lowest CORESET ID is configured) may have a priority over other UL channels.

2) A UL channel scheduled by DCI scrambled with a specific radio network temporary identifier (RNTI) may have a priority over other UL channels.

3) A priority between a plurality of UL channels may be determined according to periodicity of UL channel/RS (e.g., the priority may be determined in order of aperiodic>semi-persistent>periodic).

4) An UL channel carrying important data such as uplink control information (UCI) (e.g., HARQ-ACK information (A/N feedback), scheduling request, CSI reporting, etc.) may have a priority over other UL channels.

5) An UL channel scheduled by DCI preceding in a time domain (e.g., preceding in slot/symbol level) may have a priority over other UL channels.

Only one of the examples 1) to 5) of the priority rule is not applied, and two or more examples may be combined and applied.

As an example of applying the priority rule, if transmission timings of the UL channel 1 and the UL channel 2 overlap, the UE may transmit an UL channel (e.g., UL channel 2) with a high priority according to first configuration/indication/scheduling and may transmit an UL channel (e.g., UL channel 1) with a low priority in a pre-configured time domain resource. In this instance, the pre-configured time domain resource may be a resource shifting/delaying the first configured/indicated/scheduled resource.

For example, the pre-configured transmission timing (i.e., the pre-configured time domain resource) may be configured to be separated from an initial transmission timing (e.g., a first slot/symbol or a last slot/symbol of a transmission resource domain configured to an UL channel with a low priority) by a slot level (e.g., n slot(s)) or a symbol level (e.g., k symbol(s)). If the UE transmits the shifted/delayed UL channel in a state where the base station and the UE recognize the corresponding information, the base station may expect that the corresponding UL channel is transmitted at the corresponding timing.

The configuration of the slot-level (e.g., n slot(s)) or the symbol-level (e.g., k symbol(s)) for shift/delay may exist per RRC configuration of each UL channel/RS, or may be configured as one value according to an integrated rule. For example, because the base station and the UE recognize the number of consecutive symbols of an UL channel that has a high priority and is transmitted at an original timing, the UE may transmit an UL channel with a low priority from a symbol immediately following the end of transmission of the UL channel transmitted at the original timing considering the number of accurately overlapping symbols between UL channels.

If timing of the shifted/delayed UL channel collides with another UL channel or UL resource, the UE may give up the transmission of the shifted/delayed UL channel and drop it. And/or, the operation may be defined/configured/indicated by the base station.

[Proposal 1-2-2]

If panel IDs configured to respective UL channels (UL channel 1 and UL channel 2) are the same, the UE may operate as follows (option 2-2).

If transmission timings of the UL channel 1 and the UL channel 2 of the UE configured/indicated/scheduled by the base station overlap each other, the UE may operate according to the following i) or ii) if transmission panels respectively configured to the UL channel 1 and the UL channel 2 are the same. Here, the overlap of the transmission timings may comprise that a resource in which the UL channel 1 is transmitted and a resource in which the UL channel 2 is transmitted fully overlap or partially overlap at a slot/symbol level.

i) If the UL channel 1 and the UL channel 2 are different types of channels (e.g., PUCCH and PUSCH), the UE may perform a piggyback operation considering a priority between UL channels. Specifically, the UE may transmit the UL channel 1 and the UL channel 2 at the same time in the form of piggybacking information/data of an UL channel with a lower priority using time/frequency domain resources (e.g., REs) of an UL channel with a higher priority. Here, the priority rule between the different UL channels may be the same as a priority rule between different UL channels in the existing method (e.g., LTE and/or NR Standard).

ii) If the UL channel 1 and the UL channel 2 are the same type of channels (e.g., PUSCH), the UE may transmit the UL channel 1 and the UL channel 2 at the same time in the form of piggybacking information/data of an UL channel with a lower priority using time/frequency domain resources (e.g., REs) of a channel with a higher priority according to a predefined/pre-configured priority rule.

Examples of the predefined/pre-configured priority rule are as follows.

1) A UL channel scheduled via a lowest CORESET (i.e., CORESET to which the lowest CORESET ID is configured) may have a priority over other UL channels.

2) A UL channel scheduled by DCI scrambled with a specific radio network temporary identifier (RNTI) may have a priority over other UL channels.

3) A priority between a plurality of UL channels may be determined according to periodicity of UL channel/RS (e.g., the priority may be determined in order of aperiodic>semi-persistent>periodic),

4) An UL channel carrying important data such as uplink control information (UCI) (e.g., HARQ-ACK information (A/N feedback), scheduling request, CSI reporting, etc.) may have a priority over other UL channels.

5) An UL channel scheduled by DCI preceding in a time domain (e.g., preceding in slot/symbol level) may have a priority over other UL channels.

Only one of the examples 1) to 5) of the priority rule is not applied, and two or more examples may be combined and applied.

If transmission timings of the UL channel 1 and the UL channel 2 of the UE configured/indicated/scheduled by the base station overlap and transmission panels also overlap, the base station may configure/indicate which one of the proposals 1-2-1 and 1-2-2 the UE takes, via RRC and/or MAC CE. If the UL channel 1 and the UL channel 2 are UL channels transmitted at different transmission reception points (TRPs), the base station may configure this operation so that the UE operates according to the proposal 1-2-2 depending on a deployment situation of the corresponding network (e.g., in the case of ideal backhaul), and thus there is an effect in that information is shared between different TRPs while reducing a delay.

According to an embodiment, the UL channel 1 and the UL channel 2 may be Ack/Nack (A/N) PUCCH 1 and A/N PUCCH 2 that are transmitted at different TRPs. In this case, an operation of the UE according to the above-described embodiments is described below.

If transmission timings of the A/N PUCCH 1 and the A/N PUCCH 2 overlap and a transmission panel is different for each PUCCH resource, the UE (supporting STxMP) may simultaneously transmit two A/N PUCCHs (i.e., perform the STxMP) (proposal 1-1).

If transmission timings of the A/N PUCCH 1 and the A/N PUCCH 2 overlap and transmission panels are the same for each PUCCH resource, the UE may perform the operation of the proposal 1-2-1 and/or the proposal 1-2-2 through the comparison of priorities of two PUCCHs (A/N PUCCH 1 and A/N PUCCH 2) (e.g., based on at least one of the priority rules according to the above 1) to 5)).

According to another embodiment, it may be assumed that the UL channel 1 and the UL channel 2 are directed toward one or/and two or more TRPs. In this case, an operation of the UE according to the above-described embodiments is described below.

If transmission timings of different uplink channels (e.g., PUSCH and PUCCH, PUCCH and SRS, PUSCH and SRS) overlap and a transmission panel is different for each uplink channel, the UE (supporting STxMP) may simultaneously transmit the uplink channels (i.e., STxMP) (proposal 1-1).

If the transmission panel is different for each uplink channel, the UE may operate as follows. 1) If piggyback is possible as in a collision between PUSCH and PUCCH, the UE may perform an operation of the proposal 1-2-2. 2) If piggyback is impossible as in a collision between PUCCH and SRS, between PUSCH and SRS, between PUCCH and PRACH, and between PUSCH and PRACH, the UE may perform an operation of the proposal 1-2-1.

According to another embodiment, it may be assumed that when the UL channel 1 and the UL channel 2 are directed toward one or/and two or more TRPs, a collision occurs between the same UL channels (e.g., PUSCH 1/2, PUCCH 1/2, SRS 1/2). If the transmission panel is different for each uplink channel, the UE (supporting STxMP) may simultaneously transmit the uplink channels (i.e., STxMP) (proposal 1-1). If the transmission panel is different for each uplink channel, the UE may perform an operation of the proposal 1-2-1 and/or the proposal 1-2-2.

In this instance, even if the number of uplink channels that are simultaneously transmitted (i.e., STxMP based transmission) is 3 or more, it is obvious that the proposal 1 can be extended and applied. For example, in the case of the proposal 1-2-1, the UE may consecutively transmit a plurality of uplink channels in the form of enumerating the uplink channels in order of priorities of the uplink channels and shifting/delaying the uplink channels in order. Further, in the case of the proposal 1-2-2, the UE may transmit information/data of a plurality of uplink channels in the form of piggybacking all the remaining uplink channels to an uplink channel with a highest priority.

[Proposal 2]

Hereinafter, as in the proposal 1-1, detailed embodiments of a method of, by a UE, simultaneously transmitting a plurality of uplink channels via different panels are described.

[Proposal 2-1]

If a UE transmits UL channel 1 and UL channel 2 via pre-configured different transmission panels, a base station may configure so that the UE operates according to the following option 1 or option 2.

Option 1) the UE may transmit the UL channel 1 and the UL channel 2 using resources of the same time/frequency domain (i.e., STxMP based transmission).

Option 2) the UE may perform simultaneous transmission across multiple panels (STxMP) in a frequency division multiplexing (FDM) scheme using only resources of the same time domain

The base station may configure/indicate which one of the option 1 and the option 2 the UE takes, via RRC and/or MAC CE. Here, the same time domain may mean that a resource domain (i.e., time domain resource) to which each uplink channel is transmitted fully overlaps or partially overlaps in slot/symbol level.

When the base station performs configuration according to the option 1 or the option 2, the following effects may be considered.

If each UE wants to obtain an effect of preventing the waste of resources by transmitting a plurality of uplink channels using the same resource according to implementation of the network, the base station may configure so that the UE operates according to the option 1.

If the UE wants to obtain an effect of frequency diversity through frequency division multiplexing (FDM) for the plurality of uplink channels, the base station may configure so that the UE operates according to the option 2.

For example, if the base station configures the option 1 to the UE, the UE may operate as follows. If frequency resource domains of the UL channel 1 and the UL channel 2 (initially configured/indicated/scheduled by the base station) are different, the UE may compare priorities of the two UL channels (e.g., a priority rule applied in the case of different types of channels and/or in the case of the same type of channels as in the proposal 1) and simultaneously transmit the UL channel 1 and the UL channel 2 using an initial frequency domain resource of an UL channel with a higher priority (i.e., STxMP based transmission).

Alternatively, operations of the option 1 and the option 2 may be switched depending on whether or not frequency domain resources that the base station initially configures/indicates/schedules for the UL channel 1 and the UL channel 2 overlap (including both fully overlapping and partially overlapping). For example, if the initially configured/indicated/scheduled frequency domain resources of the UL channel 1 and the UL channel 2 partially overlap, the UE may operate according to the option 1, and if they do not overlap, the UE may operate according to the option 2.

Eventually, the proposal 2-1 proposes to design so that the transmissions of the UL channel 1 and the UL channel 2 are performed in the form of at least one option described above. This is configured so that the transmissions of the UL channel 1 and the UL channel 2 are not based on unlimited/independent scheduling, and thus improves the ease of system design/implementation.

In this instance, even if the number of simultaneously transmitted (STxMP based transmission) uplink channels is 3 or more, it is obvious that the proposal 2-1 can be extended applied.

[Proposal 2-2]

If the UE performs simultaneous transmission across multiple panels (STxMP) in the form of frequency division multiplexing the UL channel 1 and the UL channel 2 as in the option 2 of the proposal 2-1, the base station may configure so that the UE operates according to the following i) or ii).

i) The UE may perform the STxMP based on that the two uplink channels are simply FDMed.

ii) The base station may configure frequency hopping to the two uplink channels. The UE may perform the STxMP based on the FDM of the form of crossing respective hopping bandwidths of the two UL channels.

The base station may configure/indicate via RRC and/or MAC CE so that the UE operates according to one of the i) or ii). The operations according to the i) and ii) are described below with reference to FIG. 13.

FIG. 13 illustrates an example of performing simultaneous transmission across multi-panel (STxMP) according to a method described in the present disclosure.

In FIG. 13, a transverse axis denotes a time domain (e.g., symbol domain), and a longitudinal axis denotes a frequency domain (e.g., RB domain).

More specifically, (a) of FIG. 13 illustrates that uplink channels (UL channels 1 and 2) are FDMed without frequency hopping and are simultaneously transmitted (i.e., STxMP). (b) of FIG. 13 illustrates that uplink channels (UL channels 1 and 2) are FDMed with frequency hopping and are simultaneously transmitted (i.e., STxMP).

Since two uplink channels are simultaneously transmitted across multiple panels (STxMP) based on the frequency hopping according to the ii), an effect of diversity in a frequency domain can be expected.

The base station may configure/indicate repeat transmission (e.g., repetition) to the UE in the i) STxMP without frequency hopping and the ii) STxMP frequency hopping. In particular, in the case of ii) STxMP frequency hopping, the base station may configure/indicate, to the UE, the form of performing the repetition in each hopping band, as illustrated in (b) of FIG. 14.

FIG. 14 illustrates another example of performing simultaneous transmission across multi-panel (STxMP) according to a method described in the present disclosure.

FIG. 14 illustrates examples of repetition transmission in STxMP frequency hopping transmission. In FIG. 14, a transverse axis denotes a time domain (e.g., symbol domain), and a longitudinal axis denotes a frequency domain (e.g., RB domain).

More specifically, (a) of FIG. 14 illustrates that uplink channels (UL channels 1 and 2) repeat (repetition=2) with frequency hopping and are simultaneously transmitted (i.e., STxMP). (b) of FIG. 14 illustrates that a hopping band repeats (repetition=2) in an example of (a) of FIG. 14.

The UE operation in the proposal 2-2 can be particularly advantageous in terms of the pursuit of robustness through the frequency hopping and the repetition when the UL channels are used in PUCCH transmission carrying UCI (e.g., A/N PUCCH (or CSI reporting)) of relatively high importance. In particular, when frequency hopping boundaries are identical (limitedly) in a time domain, the UE operation in the proposal 2-2 may be performed between long PUCCHs (i.e., PUCCH formats 1, 3, 4) to which the frequency hopping can be configured.

In terms of implementation, the base station/UE operations according to the above-described embodiments (e.g., operations related to the transmission of uplink channel based on at least one of the proposal 1-1/proposal 1-2-1/proposal 1-2-2/proposal 2-1/proposal 2-2, etc.) may be processed by a device of FIGS. 18 to 22 to be described later (e.g., processors 102 and 202 of FIG. 19).

In addition, the base station/UE operations according to the above-described embodiments (e.g., operations related to the transmission of uplink channel based on at least one of the proposal 1-1/proposal 1-2-1/proposal 1-2-2/proposal 2-1/proposal 2-2, etc.) may be stored in a memory (e.g., 104 and 204 of FIG. 19) in the form of a command/program (e.g., instruction, executable code) for running at least one processor (e.g., 102 and 202 of FIG. 19).

FIG. 15 illustrates an example of signaling between a UE and a base station to which a method described in the present disclosure is applicable. More specifically, FIG. 15 illustrates an example of signaling between a base station (BS) and a user equipment (UE) for performing simultaneous transmission (e.g., STxMP transmission) via/using one or panels to which methods (e.g., proposal 1-1/proposal 1-2-1/proposal 1-2-2 of proposal 1/proposal 2-1/proposal 2-2 of proposal 2, etc.) described in the present disclosure are applicable. In the present disclosure, the UE and the BS are merely an example and may be replaced by various devices to be described below with reference to FIGS. 18 to 22. FIG. 15 is merely for convenience of description and does not limit a scope of the present disclosure. With reference to FIG. 15, the UE is assumed to support one or more panels, and simultaneous transmission of UL channel/RS using the one or more panels (i.e., simultaneous transmission across multi-panel) can be supported. Further, some step(s) illustrated in FIG. 15 may be omitted depending on substitution and/or setting, etc.

UE Operation

A UE may transmit UE capability information to a base station (BS), in S1510. The UE capability information may include UE capability information related to a (multi-)panel. For example, the UE capability information may include the number of panels (groups) that the UE can support, information about whether simultaneous transmission across multiple panels can be performed, information on an MPUE category (e.g., see MPUE category), and the like. For example, the UE may transmit, to the BS, the UE capability information, i.e., information on STxMP capability related to the proposal methods (e.g., proposal 1-1/proposal 1-2-1/proposal 1-2-2 of proposal 1/proposal 2-1/proposal 2-2 of proposal 2, etc.).

For example, an operation of the UE (100/200 of FIGS. 18 to 22) in the step S1510 to transmit the UE capability information to the BS (100/200 of FIGS. 18 to 22) may be implemented by a device of FIGS. 18 to 22 to be described below. For example, referring to FIG. 19, one or more processors 102 may control one or more transceivers 106 and/or one or more memories 104 so as to transmit the UE capability information, and the one or more transceivers 106 may transmit the UE capability information to the BS.

The UE may receive, from the BS, RRC configuration information related to STxMP transmission, in S1520. The RRC configuration information may include configuration information related to simultaneous transmission across multi-panel (i.e., STxMP), UL transmission related configuration information, and the like. The RRC configuration information may consist of one or multiple configurations and may be transmitted via UE-specific RRC signaling.

For example, the RRC configuration information may include the RRC configuration, etc. described in the proposal methods (e.g., proposal 1-1/proposal 1-2-1/proposal 1-2-2 of proposal 1/proposal 2-1/proposal 2-2 of proposal 2, etc.). As an example, as described in the proposal 1/proposal 1-1/proposal 1-2-1/proposal 1-2-2, the RRC configuration information may include configuration information related to a priority/configuration information related to shift and/or delay to be applied to UL transmission of a lower priority/configuration information related to piggyback to be applied to UL transmission of a lower priority, and the like. As an example, as described in the proposal 2/proposal 2-1/proposal 2-2, the RRC configuration information may include information configuring/indicating one of STxMP transmission based on resources of the same time/frequency domain or FDM type of STxMP based on resources of the same time domain/information configuring/indicating one of FDM STxMP transmission without frequency hopping or STxMP transmission based on frequency hopping, and the like.

For example, an operation of the UE (100/200 of FIGS. 18 to 22) in the step S1520 to receive the RRC configuration information from the BS (100/200 of FIGS. 18 to 22) may be implemented by the device of FIGS. 18 to 22 to be described below. For example, referring to FIG. 19, one or more processors 102 may control one or more transceivers 106 and/or one or more memories 104 so as to receive the RRC configuration information, and the one or more transceivers 106 may receive the RRC configuration information from the BS.

The UE may receive, from the BS, information related to scheduling of the UL transmission, in S1530. Herein, the UL transmission may include transmission of PUSCH (e.g., UL data)/PUCCH (e.g., CSI, etc.)/PRACH (e.g., PDCCH ordered PRACH, PRACH in Contention Free RACH procedure, etc.)/SRS (e.g., periodic/semi-persistent/aperiodic SRS). In this case, information related to the scheduling may be transmitted via DCI/MAC-CE, etc. A time domain behavior of the UL transmission may correspond to at least one of periodic/semi-persistent/aperiodic. For example, the information related to scheduling of the UL transmission may be information related to scheduling of UL channel/RS transmission in the proposal methods (e.g., proposal 1-1/proposal 1-2-1/proposal 1-2-2 of proposal 1/proposal 2-1/proposal 2-2 of proposal 2, etc.).

For example, in the case of aperiodic SRS transmission/aperiodic CSI transmission/PDCCH ordered PRACH transmission, etc., the UE may receive, from the BS, DCI (e.g., UL DCI) related to scheduling of the corresponding transmission. For example, in the case of PUCCH transmission/aperiodic SRS transmission/aperiodic CSI transmission, etc., the UE may receive, from the BS, DCI (e.g., DL DCI) related to scheduling of the corresponding transmission and PDSCH scheduled/indicated by the corresponding DCI. For example, in the case of PUSCH transmission/aperiodic SRS transmission, etc., the UE may receive, from the BS, DCI (e.g., UL DCI) related to scheduling of the corresponding transmission. For example, in the case of semi-persistent SRS transmission, etc., the UE may receive, from the BS, DCI related to scheduling of the corresponding transmission and/or MAC-CE.

For example, an operation of the UE (100/200 of FIGS. 18 to 22) in the step S1530 to receive, from the BS (100/200 of FIGS. 18 to 22), information related to scheduling of the UL transmission may be implemented by the device of FIGS. 18 to 22 to be described below. For example, referring to FIG. 19, one or more processors 102 may control one or more transceivers 106 and/or one or more memories 104 so as to receive information related to scheduling of the UL transmission, and the one or more transceivers 106 may receive, from the BS, information related to scheduling of the UL transmission.

As assumed in the proposal methods (e.g., proposal 1-1/proposal 1-2-1/proposal 1-2-2 of proposal 1/proposal 2-1/proposal 2-2 of proposal 2, etc.), timings for transmission between UL transmissions (i.e., UL channel(s)/RS(s)) may overlap (fully/partially at slot/symbol level)/collide based on information in the step S1530. That is, transmission timings of the PUSCH transmission/PUCCH transmission/SRS transmission/PRACH transmission may overlap. In this case, the UE may perform the UL transmission to the BS based on the proposal methods (e.g., proposal 1-1/proposal 1-2-1/proposal 1-2-2 of proposal 1/proposal 2-1/proposal 2-2 of proposal 2, etc.).

For example, if multiple UL channel(s)/RS(s) are simultaneously configured/indicated/scheduled and their transmission timings overlap/collide in a time domain, the UE may simultaneously transmit the multiple UL channel(s)/RS(s) to the BS based on the methods(s) of the proposal 1 and/or the methods(s) of the proposal 2. For example, as described in the proposal 1-1, the UE may transmit the UL channel(s)/RS(s) to the BS via/using each panel configured for each UL channel/RS. For example, as described in the proposal 1-2-1, based on a priority rule of the multiple UL channel(s)/RS(s), the UE may transmit UL channel(s)/RS(s) with a high priority to the BS and may shift/delay it and transmit UL channel(s)/RS(s) with a low priority to the BS. For example, as described in the proposal 1-2-2, based on the priority rule of the multiple UL channel(s)/RS(s), the UE may simultaneously transmit the multiple UL channel(s)/RS(s) to the BS in the form of piggybacking information/data of a UL channel with a low priority using time/frequency domain resources (e.g., REs) of an UL channel with a high priority. For example, as described in the proposal 2-1, the UE may transmit the multiple UL channel(s)/RS(s) to the BS through i) the STxMP method using resources of the same time/frequency domain and/or ii) the STxMP method in the form of 1-DM using resources of the same time domain. For example, as described in the proposal 2-2, the UE may transmit the multiple UL channel(s)/RS(s) to the BS through i) the FDM STxMP method without frequency hopping and/or ii) the STxMP method using frequency hopping.

For example, an operation of the UE (100/200 of FIGS. 18 to 22) in the step S1540 to perform the UL transmission to the BS (100/200 of FIGS. 18 to 22) (i.e., transmit UL channel(s)/RS(s)) may be implemented by the device of FIGS. 18 to 22 to be described below. For example, referring to FIG. 19, one or more processors 102 may control one or more transceivers 106 and/or one or more memories 104 so as to perform the UL transmission (i.e. transmit UL channel(s)/RS(s)), and the one or more transceivers 106 may perform the UL transmission to the BS (i.e., transmit UL channel(s)/RS(s) to the BS).

BS Operation

A base station (BS) may receive UE capability information from a UE, in S1510. The UE capability information may include UE capability information related to a (multi-)panel. For example, the UE capability information may include the number of panels (groups) that the UE can support, information about whether simultaneous transmission across multiple panels can be performed, information on an MPUE category (e.g., see MPUE category), and the like. For example, the BS may receive, from the UE, the UE capability information, i.e., information on STxMP capability related to the proposal methods (e.g., proposal 1-1/proposal 1-2-1/proposal 1-2-2 of proposal 1/proposal 2-1/proposal 2-2 of proposal 2, etc.).

For example, an operation of the BS (100/200 of FIGS. 18 to 22) in the step S1510 to receive the UE capability information from the UE (100/200 of FIGS. 18 to 22) may be implemented by a device of FIGS. 18 to 22 to be described below. For example, referring to FIG. 19, one or more processors 102 may control one or more transceivers 106 and/or one or more memories 104 so as to receive the UE capability information, and the one or more transceivers 106 may receive the UE capability information from the UE.

The BS may transmit, to the UE, RRC configuration information related to STxMP transmission, in S1520. The RRC configuration information may include configuration information related to simultaneous transmission across multi-panel (i.e., STxMP), UL transmission related configuration information, and the like. The RRC configuration information may consist of one or multiple configurations and may be transmitted via UE-specific RRC signaling.

For example, the RRC configuration information may include the RRC configuration, etc. described in the proposal methods (e.g., proposal 1-1/proposal 1-2-1/proposal 1-2-2 of proposal 1/proposal 2-1/proposal 2-2 of proposal 2, etc.). As an example, as described in the proposal 1/proposal 1-1/proposal 1-2-1/proposal 1-2-2, the RRC configuration information may include configuration information related to a priority/configuration information related to shift and/or delay to be applied to UL transmission of a lower priority/configuration information related to piggyback to be applied to UL transmission of a lower priority, and the like. As an example, as described in the proposal 2/proposal 2-1/proposal 2-2, the RRC configuration information may include information configuring/indicating one of STxMP transmission based on resources of the same time/frequency domain or FDM type of STxMP based on resources of the same time domain/information configuring/indicating one of FDM STxMP transmission without frequency hopping or STxMP transmission based on frequency hopping, and the like.

For example, an operation of the BS (100/200 of FIGS. 18 to 22) in the step S1520 to transmit the RRC configuration information to the UE (100/200 of FIGS. 18 to 22) may be implemented by the device of FIGS. 18 to 22 to be described below. For example, referring to FIG. 19, one or more processors 102 may control one or more transceivers 106 and/or one or more memories 104 so as to transmit the RRC configuration information, and the one or more transceivers 106 may transmit the RRC configuration information to the UE.

The BS may transmit, to the UE, information related to scheduling of the UL transmission, in S1530. Herein, the UL transmission may include transmission of PUSCH (e.g., UL data)/PUCCH (e.g., CSI, etc.)/PRACH (e.g., PDCCH ordered PRACH, PRACH in Contention Free RACH procedure, etc.)/SRS (e.g., periodic/semi-persistent/aperiodic SRS). In this case, information related to the scheduling may be transmitted via DCI/MAC-CE, etc. A time domain behavior of the UL transmission may correspond to at least one of periodic/semi-persistent/aperiodic. For example, the information related to scheduling of the UL transmission may be information related to scheduling of UL channel/RS transmission in the proposal methods (e.g., proposal 1-1/proposal 1-2-1/proposal 1-2-2 of proposal 1/proposal 2-1/proposal 2-2 of proposal 2, etc.).

For example, in the case of aperiodic SRS transmission/aperiodic CSI transmission/PDCCH ordered PRACH transmission, etc., the BS may transmit, to the UE, DCI (e.g., UL DCI) related to scheduling of the corresponding transmission. For example, in the case of PUCCH transmission/aperiodic SRS transmission/aperiodic CSI transmission, etc., the BS may transmit, to the UE, DCI (e.g., DL DCI) related to scheduling of the corresponding transmission and PDSCH scheduled/indicated by the corresponding DCI. For example, in the case of PUSCH transmission/aperiodic SRS transmission, etc., the BS may transmit, to the UE, DCI (e.g., UL DCI) related to scheduling of the corresponding transmission. For example, in the case of semi-persistent SRS transmission, etc., the BS may transmit, to the UE, DCI related to scheduling of the corresponding transmission and/or MAC-CE.

For example, an operation of the BS (100/200 of FIGS. 18 to 22) in the step S1530 to transmit, to the UE (100/200 of FIGS. 18 to 22), information related to scheduling of the UL transmission may be implemented by the device of FIGS. 18 to 22 to be described below. For example, referring to FIG. 19, one or more processors 102 may control one or more transceivers 106 and/or one or more memories 104 so as to transmit information related to scheduling of the UL transmission, and the one or more transceivers 106 may transmit, to the UE, information related to scheduling of the UL transmission.

As assumed in the proposal methods (e.g., proposal 1-1/proposal 1-2-1/proposal 1-2-2 of proposal 1/proposal 2-1/proposal 2-2 of proposal 2, etc.), timings for transmission between UL transmissions (i.e., UL channel(s)/RS(s)) may overlap (fully/partially at slot/symbol level)/collide based on information in the step S1530. That is, transmission timings of the PUSCH transmission/PUCCH transmission/SRS transmission/PRACH transmission may overlap. In this case, the BS may receive, from the UE, UL channel(s)/RS(s) transmitted based on the proposal methods (e.g., proposal 1-1/proposal 1-2-1/proposal 1-2-2 of proposal 1/proposal 2-1/proposal 2-2 of proposal 2, etc.).

For example, if multiple UL channel(s)/RS(s) are simultaneously configured/indicated/scheduled and their transmission timings overlap/collide in a time domain, the BS may receive, from the UE, the multiple UL channel(s)/RS(s) simultaneously transmitted based on the methods(s) of the proposal 1 and/or the methods(s) of the proposal 2. For example, as described in the proposal 1-1, the BS may receive the UL channel(s)/RS(s) from the UE via/using each panel configured for each UL channel/RS. For example, as described in the proposal 1-2-1, based on a priority rule of the multiple UL channel(s)/RS(s), the BS may receive UL channel(s)/RS(s) with a high priority from the UE and may shift/delay it and receive UL channel(s)/RS(s) with a low priority from the UE. For example, as described in the proposal 1-2-2, based on the priority rule of the multiple UL channel(s)/RS(s), the BS may simultaneously receive the multiple UL channel(s)/RS(s) from the UE in the form of piggybacking information/data of a UL channel with a low priority using time/frequency domain resources (e.g., REs) of an UL channel with a high priority. For example, as described in the proposal 2-1, the BS may receive the multiple UL channel(s)/RS(s) from the UE through i) the STxMP method using resources of the same time/frequency domain and/or ii) the STxMP method in the form of FDM using resources of the same time domain. For example, as described in the proposal 2-2, the BS may receive the multiple UL channel(s)/RS(s) from the UE through i) the FDM STxMP method without frequency hopping and/or ii) the STxMP method using frequency hopping.

For example, an operation of the BS (100/200 of FIGS. 18 to 22) in the step S1540 to receive the UL channel(s)/RS(s) from the UE (100/200 of FIGS. 18 to 22) may be implemented by the device of FIGS. 18 to 22 to be described below. For example, referring to FIG. 19, one or more processors 102 may control one or more transceivers 106 and/or one or more memories 104 so as to receive the UL channel(s)/RS(s), and the one or more transceivers 106 may receive the UL channel(s)/RS(s) from the UE.

As mentioned above, the BS/UE signaling and operation (e.g., proposal 1-1/proposal 1-2-1/proposal 1-2-2 of proposal 1/proposal 2-1/proposal 2-2 of proposal 2/FIG. 15, etc.) described above may be implemented by a device to be described below (e.g., FIGS. 18 to 22). For example, the UE may correspond to a first wireless device, and the BS may correspond to a second wireless device. In some cases, the reverse may also be considered.

For example, the BS/UE signaling and operation (e.g., proposal 1-1/proposal 1-2-1/proposal 1-2-2 of proposal 1/proposal 2-1/proposal 2-2 of proposal 2/FIG. 15, etc.) described above may be processed by one or more processors (e.g., 102 and 202) of FIG. 19. The BS/UE signaling and operation (e.g., proposal 1-1/proposal 1-2-1/proposal 1-2-2 of proposal 1/proposal 2-1/proposal 2-2 of proposal 2/FIG. 15, etc.) described above may be stored in a memory (e.g., one or more memories 104 and 204 of FIG. 19) in the form of a command/program (e.g., instruction, executable code) for running at least one processor (e.g., 102 and 202) of FIGS. 18 to 22.

The embodiments described above are described from UE operation perspective in detail below with reference to FIG. 16. Methods to be described below are distinguished merely for convenience of description. Therefore, it is obvious that partial configuration of any one method can be replaced by partial configuration of another method, or methods can be combined and applied.

FIG. 16 is a flow chart illustrating a method of transmitting, by a UE, an uplink channel in a wireless communication system according to an embodiment of the present disclosure.

Referring to FIG. 16, a method of transmitting, by a UE, an uplink channel in a wireless communication system according to an embodiment of the present disclosure may comprise a step S1610 of transmitting capability information related to a panel, a step S1620 of receiving configuration information related to a transmission of the uplink channel, and a step S1630 of transmitting the uplink channel.

In the S1610, the UE transmits, to a base station, the capability information related to the panel for the transmission of the uplink channel

According to an embodiment, the capability information may be related to whether a simultaneous transmission across multi-panel (STxMP) is supported.

According to the S1610, an operation of the UE (100/200 of FIGS. 18 to 22) to transmit, to the base station (100/200 of FIGS. 18 to 22), the capability information related to the panel for the transmission of the uplink channel may be implemented by a device of FIGS. 16 to 20. For example, referring to FIG. 19, one or more processors 102 may control one or more transceivers 106 and/or one or more memories 104 so as to transmit, to the base station 200, the capability information related to the panel for the transmission of the uplink channel

In the S1620, the UE receives, from the base station, the configuration information related to the transmission of the uplink channel.

The configuration information may be based on at least one of RRC configuration information (S1520) illustrated in FIG. 15 or information (S1530) related to scheduling of an UL transmission.

According to the S1620, an operation of the UE (100/200 of FIGS. 18 to 22) to receive, from the base station (100/200 of FIGS. 18 to 22), the configuration information related to the transmission of the uplink channel may be implemented by the device of FIGS. 16 to 20. For example, referring to FIG. 19, one or more processors 102 may control one or more transceivers 106 and/or one or more memories 104 so as to receive, from the base station 200, the configuration information related to the transmission of the uplink channel.

In the S1630, the UE transmits the uplink channel to the base station based on the configuration information.

According to an embodiment, based on that the transmission of the uplink channel collides with a transmission of other uplink channel scheduled to the UE in a time domain, i) if a first panel related to the transmission of the uplink channel is different from a second panel related to the transmission of the other uplink channel, the uplink channel and the other uplink channel may be simultaneously transmitted, and ii) if the first panel is the same as the second panel, the uplink channel may be transmitted in a specific resource. The present embodiment may be based on the proposal 1-2.

That the transmission of the uplink channel collides with the transmission of the other uplink channel scheduled to the UE in the time domain may mean that all or part of a time domain in which the uplink channel is configured overlaps all or part of a time domain in which the other uplink channel is configured.

The first panel may include at least one of panels of the UE. In the same manner, the second panel may include at least one of panels of the UE.

According to an embodiment, based on that a priority of the uplink channel is lower than a priority of the other uplink channel, the uplink channel may be transmitted in the specific resource. If the priority of the uplink channel is higher than the priority of the other uplink channel, the uplink channel may be transmitted in a resource according to pre-configured scheduling information (i.e., resource in which the transmission of the uplink channel is configured).

According to an embodiment, the specific resource may be positioned in a time domain in which the transmission of the uplink channel is shifted by a pre-configured unit from a configured time domain. The present embodiment may be based on the proposal 1-2-1.

According to an embodiment, the specific resource may be based on a resource in which the other uplink channel is configured. That is, the uplink channel (with a low priority) may be transmitted in a resource, in which the other uplink channel (with a high priority) is transmitted, based on a piggyback operation. The present embodiment may be based on the proposal 1-2-3.

According to an embodiment, based on that the uplink channel and the other uplink channel are the same type of uplink channels, the priority may be determined depending on a pre-configured priority rule. The present embodiment may be based on the proposal 1-2.

The priority may be determined based on the pre-configured priority rule. For example,

1) whether the uplink channel has been scheduled based on a control resource set (CORESET) having a lowest ID,

2) whether the uplink channel has been scheduled by downlink control information (DCI) based on a specific radio network temporary identifier (RNTI),

3) a periodicity related to the transmission of the uplink channel,

4) a type of information related to the uplink channel, and

5) whether the uplink channel has been scheduled by downlink control information (DCI) preceding in a time domain,

the priority may be determined based on at least one of above 1) to 5).

According to an embodiment, if the uplink channel and the other uplink channel are simultaneously transmitted, a resource in which the uplink channel and the other uplink channel are transmitted may be based on 1) the same time-frequency domain or 2) the same time domain. The present embodiment may be based on the proposal 2.

Based on that all or part of a frequency domain in which the transmission of the uplink channel is configured does not overlap all or part of a frequency domain in which the transmission of the other uplink channel is configured, the uplink channel and the other uplink channel may be simultaneously transmitted based on frequency division multiplexing (FDM). The present embodiment may be based on the proposal 2-1.

The uplink channel and the other uplink channel that are simultaneously transmitted based on the FDM may be transmitted based on at least one of a frequency hopping or a repetition. The present embodiment may be based on the proposal 2-2.

Based on that a frequency hopping boundary configured to the uplink channel and a frequency hopping boundary configured to the other uplink channel are identical to each other, the uplink channel and the other uplink channel may be simultaneously transmitted based on the frequency hopping and the repetition.

According to the S1630, an operation of the UE (100/200 of FIGS. 18 to 22) to transmit the uplink channel to the base station (100/200 of FIGS. 18 to 22) based on the configuration information may be implemented by the device of FIGS. 16 to 20. For example, referring to FIG. 19, one or more processors 102 may control one or more transceivers 106 and/or one or more memories 104 so as to transmit the uplink channel to the base station 200 based on the configuration information.

The embodiments described above are described from BS operation perspective in detail below with reference to FIG. 17. Methods to be described below are distinguished merely for convenience of description. Therefore, it is obvious that partial configuration of any one method can be replaced by partial configuration of another method, or methods can be combined and applied.

FIG. 17 is a flow chart illustrating a method of receiving, by a base station, an uplink channel in a wireless communication system according to another embodiment of the present disclosure.

Referring to FIG. 17, a method of receiving, by a base station, an uplink channel in a wireless communication system according to another embodiment of the present disclosure may comprise a step S1710 of receiving capability information related to a panel, a step S1720 of transmitting configuration information related to a transmission of the uplink channel, and a step S1730 of receiving the uplink channel

In the S1710, the base station receives, from a UE, the capability information related to the panel for the transmission of the uplink channel

According to an embodiment, the capability information may be related to whether a simultaneous transmission across multi-panel (STxMP) is supported.

According to the S1710, an operation of the base station (100/200 of FIGS. 18 to 22) to receive, from the UE (100/200 of FIGS. 18 to 22), the capability information related to the panel for the transmission of the uplink channel may be implemented by a device of FIGS. 17 to 20. For example, referring to FIG. 19, one or more processors 202 may control one or more transceivers 206 and/or one or more memories 204 so as to receive, from the UE 100, the capability information related to the panel for the transmission of the uplink channel

In the S1720, the base station transmits, to the UE, the configuration information related to the transmission of the uplink channel.

The configuration information may be based on at least one of RRC configuration information (S1520) illustrated in FIG. 15 or information (S1530) related to scheduling of an UL transmission.

According to the S1720, an operation of the base station (100/200 of FIGS. 18 to 22) to transmit, to the UE (100/200 of FIGS. 18 to 22), the configuration information related to the transmission of the uplink channel may be implemented by the device of FIGS. 17 to 20. For example, referring to FIG. 19, one or more processors 202 may control one or more transceivers 206 and/or one or more memories 204 so as to transmit, to the UE 100, the configuration information related to the transmission of the uplink channel.

In the S1730, the base station receives the uplink channel from the UE based on the configuration information.

According to an embodiment, based on that the transmission of the uplink channel collides with a transmission of other uplink channel scheduled to the base station in a time domain, i) if a first panel related to the transmission of the uplink channel is different from a second panel related to the transmission of the other uplink channel, the uplink channel and the other uplink channel may be simultaneously transmitted, and ii) if the first panel is the same as the second panel, the uplink channel may be transmitted in a specific resource. The present embodiment may be based on the proposal 1-2.

That the transmission of the uplink channel collides with the transmission of the other uplink channel scheduled to the base station in the time domain may mean that all or part of a time domain in which the uplink channel is configured overlaps all or part of a time domain in which the other uplink channel is configured.

The first panel may include at least one of panels of the UE. In the same manner, the second panel may include at least one of panels of the UE.

According to an embodiment, based on that a priority of the uplink channel is lower than a priority of the other uplink channel, the uplink channel may be transmitted in the specific resource. If the priority of the uplink channel is higher than the priority of the other uplink channel, the uplink channel may be transmitted in a resource according to pre-configured scheduling information (i.e., resource in which the transmission of the uplink channel is configured).

According to an embodiment, the specific resource may be positioned in a time domain in which the transmission of the uplink channel is shifted by a pre-configured unit from a configured time domain. The present embodiment may be based on the proposal 1-2-1.

According to an embodiment, the specific resource may be based on a resource in which the other uplink channel is configured. That is, the uplink channel (with a low priority) may be transmitted in a resource, in which the other uplink channel (with a high priority) is transmitted, based on a piggyback operation. The present embodiment may be based on the proposal 1-2-3.

According to an embodiment, based on that the uplink channel and the other uplink channel are the same type of uplink channels, the priority may be determined depending on a pre-configured priority rule. The present embodiment may be based on the proposal 1-2.

The priority may be determined based on the pre-configured priority rule. For example,

1) whether the uplink channel has been scheduled based on a control resource set (CORESET) having a lowest ID,

2) whether the uplink channel has been scheduled by downlink control information (DCI) based on a specific radio network temporary identifier (RNTI),

3) a periodicity related to the transmission of the uplink channel,

4) a type of information related to the uplink channel, and

5) whether the uplink channel has been scheduled by downlink control information (DCI) preceding in a time domain,

the priority may be determined based on at least one of above 1) to 5).

According to an embodiment, if the uplink channel and the other uplink channel are simultaneously transmitted, a resource in which the uplink channel and the other uplink channel are transmitted may be based on 1) the same time-frequency domain or 2) the same time domain. The present embodiment may be based on the proposal 2.

Based on that all or part of a frequency domain in which the transmission of the uplink channel is configured does not overlap all or part of a frequency domain in which the transmission of the other uplink channel is configured, the uplink channel and the other uplink channel may be simultaneously transmitted based on frequency division multiplexing (FDM). The present embodiment may be based on the proposal 2-1.

The uplink channel and the other uplink channel that are simultaneously transmitted based on the FDM may be transmitted based on at least one of a frequency hopping or a repetition. The present embodiment may be based on the proposal 2-2.

Based on that a frequency hopping boundary configured to the uplink channel and a frequency hopping boundary configured to the other uplink channel are identical to each other, the uplink channel and the other uplink channel may be simultaneously transmitted based on the frequency hopping and the repetition.

According to the S1730, an operation of the base station (100/200 of FIGS. 18 to 22) to receive the uplink channel from the UE (100/200 of FIGS. 18 to 22) based on the configuration information may be implemented by the device of FIGS. 17 to 20. For example, referring to FIG. 19, one or more processors 202 may control one or more transceivers 206 and/or one or more memories 204 so as to receive the uplink channel from the UE 100 based on the configuration information.

Example of Communication System Applied to Present Disclosure

The various descriptions, functions, procedures, proposals, methods, and/or operational flowcharts of the present disclosure described in this document may be applied to, without being limited to, a variety of fields requiring wireless communication/connection (e.g., 5G) between devices.

Hereinafter, a description will be given in more detail with reference to the drawings. In the following drawings/description, the same reference symbols may denote the same or corresponding hardware blocks, software blocks, or functional blocks unless described otherwise.

FIG. 18 illustrates a communication system 1 applied to the present disclosure.

Referring to FIG. 18, a communication system 1 applied to the present disclosure includes wireless devices, Base Stations (BSs), and a network. Herein, the wireless devices represent devices performing communication using Radio Access Technology (RAT) (e.g., 5G New RAT (NR)) or Long-Term Evolution (LTE)) and may be referred to as communication/radio/5G devices. The wireless devices may include, without being limited to, a robot 100 a, vehicles 100 b-1 and 100 b-2, an eXtended Reality (XR) device 100 c, a hand-held device 100 d, a home appliance 100 e, an Internet of Things (IoT) device 100 f, and an Artificial Intelligence (AI) device/server 400. For example, the vehicles may include a vehicle having a wireless communication function, an autonomous driving vehicle, and a vehicle capable of performing communication between vehicles. Herein, the vehicles may include an Unmanned Aerial Vehicle (UAV) (e.g., a drone). The XR device may include an Augmented Reality (AR)/Virtual Reality (VR)/Mixed Reality (MR) device and may be implemented in the form of a Head-Mounted Device (HMD), a Head-Up Display (HUD) mounted in a vehicle, a television, a smartphone, a computer, a wearable device, a home appliance device, a digital signage, a vehicle, a robot, etc. The hand-held device may include a smartphone, a smartpad, a wearable device (e.g., a smartwatch or a smartglasses), and a computer (e.g., a notebook). The home appliance may include a TV, a refrigerator, and a washing machine. The IoT device may include a sensor and a smartmeter. For example, the BSs and the network may be implemented as wireless devices and a specific wireless device 200 a may operate as a BS/network node with respect to other wireless devices.

The wireless devices 100 a to 100 f may be connected to the network 300 via the BSs 200. An AI technology may be applied to the wireless devices 100 a to 100 f and the wireless devices 100 a to 100 f may be connected to the AI server 400 via the network 300. The network 300 may be configured using a 3G network, a 4G (e.g., LTE) network, or a 5G (e.g., NR) network. Although the wireless devices 100 a to 100 f may communicate with each other through the BSs 200/network 300, the wireless devices 100 a to 100 f may perform direct communication (e.g., sidelink communication) with each other without passing through the BSs/network. For example, the vehicles 100 b-1 and 100 b-2 may perform direct communication (e.g. Vehicle-to-Vehicle (V2V)/Vehicle-to-everything (V2X) communication). The IoT device (e.g., a sensor) may perform direct communication with other IoT devices (e.g., sensors) or other wireless devices 100 a to 100 f.

Wireless communication/connections 150 a, 150 b, or 150 c may be established between the wireless devices 100 a to 100 f/BS 200, or BS 200/BS 200. Herein, the wireless communication/connections may be established through various RATs (e.g., 5G NR) such as uplink/downlink communication 150 a, sidelink communication 150 b (or, D2D communication), or inter BS communication (e.g. relay, Integrated Access Backhaul (IAB)). The wireless devices and the BSs/the wireless devices may transmit/receive radio signals to/from each other through the wireless communication/connections 150 a and 150 b. For example, the wireless communication/connections 150 a and 150 b may transmit/receive signals through various physical channels. To this end, at least a part of various configuration information configuring processes, various signal processing processes (e.g., channel encoding/decoding, modulation/demodulation, and resource mapping/demapping), and resource allocating processes, for transmitting/receiving radio signals, may be performed based on the various proposals of the present disclosure.

Example of Wireless Device Applied to the Present Disclosure

FIG. 19 illustrates wireless devices applicable to the present disclosure.

Referring to FIG. 19, a first wireless device 100 and a second wireless device 200 may transmit radio signals through a variety of RATs (e.g., LTE and NR). Herein, {the first wireless device 100 and the second wireless device 200} may correspond to {the wireless device 100 x and the BS 200} and/or {the wireless device 100 x and the wireless device 100 x} of FIG. 18.

The first wireless device 100 may include one or more processors 102 and one or more memories 104 and additionally further include one or more transceivers 106 and/or one or more antennas 108. The processor(s) 102 may control the memory(s) 104 and/or the transceiver(s) 106 and may be configured to implement the descriptions, functions, procedures, proposals, methods, and/or operational flowcharts disclosed in this document. For example, the processor(s) 102 may process information within the memory(s) 104 to generate first information/signals and then transmit radio signals including the first information/signals through the transceiver(s) 106. The processor(s) 102 may receive radio signals including second information/signals through the transceiver 106 and then store information obtained by processing the second information/signals in the memory(s) 104. The memory(s) 104 may be connected to the processor(s) 102 and may store a variety of information related to operations of the processor(s) 102. For example, the memory(s) 104 may store software code including commands for performing a part or the entirety of processes controlled by the processor(s) 102 or for performing the descriptions, functions, procedures, proposals, methods, and/or operational flowcharts disclosed in this document. Herein, the processor(s) 102 and the memory(s) 104 may be a part of a communication modem/circuit/chip designed to implement RAT (e.g., LTE or NR). The transceiver(s) 106 may be connected to the processor(s) 102 and transmit and/or receive radio signals through one or more antennas 108. Each of the transceiver(s) 106 may include a transmitter and/or a receiver. The transceiver(s) 106 may be interchangeably used with Radio Frequency (RF) unit(s). In the present disclosure, the wireless device may represent a communication modem/circuit/chip.

The second wireless device 200 may include one or more processors 202 and one or more memories 204 and additionally further include one or more transceivers 206 and/or one or more antennas 208. The processor(s) 202 may control the memory(s) 204 and/or the transceiver(s) 206 and may be configured to implement the descriptions, functions, procedures, proposals, methods, and/or operational flowcharts disclosed in this document. For example, the processor(s) 202 may process information within the memory(s) 204 to generate third information/signals and then transmit radio signals including the third information/signals through the transceiver(s) 206. The processor(s) 202 may receive radio signals including fourth information/signals through the transceiver(s) 106 and then store information obtained by processing the fourth information/signals in the memory(s) 204. The memory(s) 204 may be connected to the processor(s) 202 and may store a variety of information related to operations of the processor(s) 202. For example, the memory(s) 204 may store software code including commands for performing a part or the entirety of processes controlled by the processor(s) 202 or for performing the descriptions, functions, procedures, proposals, methods, and/or operational flowcharts disclosed in this document. Herein, the processor(s) 202 and the memory(s) 204 may be a part of a communication modem/circuit/chip designed to implement RAT (e.g., LTE or NR). The transceiver(s) 206 may be connected to the processor(s) 202 and transmit and/or receive radio signals through one or more antennas 208. Each of the transceiver(s) 206 may include a transmitter and/or a receiver. The transceiver(s) 206 may be interchangeably used with RF unit(s). In the present disclosure, the wireless device may represent a communication modem/circuit/chip.

Hereinafter, hardware elements of the wireless devices 100 and 200 will be described more specifically. One or more protocol layers may be implemented by, without being limited to, one or more processors 102 and 202. For example, the one or more processors 102 and 202 may implement one or more layers (e.g., functional layers such as PHY, MAC, RLC, PDCP, RRC, and SDAP). The one or more processors 102 and 202 may generate one or more Protocol Data Units (PDUs) and/or one or more Service Data Unit (SDUs) according to the descriptions, functions, procedures, proposals, methods, and/or operational flowcharts disclosed in this document. The one or more processors 102 and 202 may generate messages, control information, data, or information according to the descriptions, functions, procedures, proposals, methods, and/or operational flowcharts disclosed in this document. The one or more processors 102 and 202 may generate signals (e.g., baseband signals) including PDUs, SDUs, messages, control information, data, or information according to the descriptions, functions, procedures, proposals, methods, and/or operational flowcharts disclosed in this document and provide the generated signals to the one or more transceivers 106 and 206. The one or more processors 102 and 202 may receive the signals (e.g., baseband signals) from the one or more transceivers 106 and 206 and acquire the PDUs, SDUs, messages, control information, data, or information according to the descriptions, functions, procedures, proposals, methods, and/or operational flowcharts disclosed in this document.

The one or more processors 102 and 202 may be referred to as controllers, microcontrollers, microprocessors, or microcomputers. The one or more processors 102 and 202 may be implemented by hardware, firmware, software, or a combination thereof. As an example, one or more Application Specific Integrated Circuits (ASICs), one or more Digital Signal Processors (DSPs), one or more Digital Signal Processing Devices (DSPDs), one or more Programmable Logic Devices (PLDs), or one or more Field Programmable Gate Arrays (FPGAs) may be included in the one or more processors 102 and 202. The descriptions, functions, procedures, proposals, methods, and/or operational flowcharts disclosed in this document may be implemented using firmware or software and the firmware or software may be configured to include the modules, procedures, or functions. Firmware or software configured to perform the descriptions, functions, procedures, proposals, methods, and/or operational flowcharts disclosed in this document may be included in the one or more processors 102 and 202 or stored in the one or more memories 104 and 204 so as to be driven by the one or more processors 102 and 202. The descriptions, functions, procedures, proposals, methods, and/or operational flowcharts disclosed in this document may be implemented using firmware or software in the form of code, commands, and/or a set of commands.

The one or more memories 104 and 204 may be connected to the one or more processors 102 and 202 and store various types of data, signals, messages, information, programs, code, instructions, and/or commands The one or more memories 104 and 204 may be configured by Read-Only Memories (ROMs), Random Access Memories (RAMs), Electrically Erasable Programmable Read-Only Memories (EPROMs), flash memories, hard drives, registers, cash memories, computer-readable storage media, and/or combinations thereof. The one or more memories 104 and 204 may be located at the interior and/or exterior of the one or more processors 102 and 202. The one or more memories 104 and 204 may be connected to the one or more processors 102 and 202 through various technologies such as wired or wireless connection.

The one or more transceivers 106 and 206 may transmit user data, control information, and/or radio signals/channels, mentioned in the methods and/or operational flowcharts of this document, to one or more other devices. The one or more transceivers 106 and 206 may receive user data, control information, and/or radio signals/channels, mentioned in the descriptions, functions, procedures, proposals, methods, and/or operational flowcharts disclosed in this document, from one or more other devices. For example, the one or more transceivers 106 and 206 may be connected to the one or more processors 102 and 202 and transmit and receive radio signals. For example, the one or more processors 102 and 202 may perform control so that the one or more transceivers 106 and 206 may transmit user data, control information, or radio signals to one or more other devices. The one or more processors 102 and 202 may perform control so that the one or more transceivers 106 and 206 may receive user data, control information, or radio signals from one or more other devices. The one or more transceivers 106 and 206 may be connected to the one or more antennas 108 and 208 and the one or more transceivers 106 and 206 may be configured to transmit and receive user data, control information, and/or radio signals/channels, mentioned in the descriptions, functions, procedures, proposals, methods, and/or operational flowcharts disclosed in this document, through the one or more antennas 108 and 208. In this document, the one or more antennas may be a plurality of physical antennas or a plurality of logical antennas (e.g., antenna ports). The one or more transceivers 106 and 206 may convert received radio signals/channels etc. from RF band signals into baseband signals in order to process received user data, control information, radio signals/channels, etc. using the one or more processors 102 and 202. The one or more transceivers 106 and 206 may convert the user data, control information, radio signals/channels, etc. processed using the one or more processors 102 and 202 from the base band signals into the RF band signals. To this end, the one or more transceivers 106 and 206 may include (analog) oscillators and/or filters.

Example of Signal Processing Circuit Applied to the Present Disclosure

FIG. 20 illustrates a signal process circuit for a transmission signal.

Referring to FIG. 20, a signal processing circuit 1000 may include scramblers 1010, modulators 1020, a layer mapper 1030, a precoder 1040, resource mappers 1050, and signal generators 1060. An operation/function of FIG. 20 may be performed, without being limited to, the processors 102 and 202 and/or the transceivers 106 and 206 of FIG. 19. Hardware elements of FIG. 20 may be implemented by the processors 102 and 202 and/or the transceivers 106 and 206 of FIG. 19. For example, blocks 1010 to 1060 may be implemented by the processors 102 and 202 of FIG. 19. Alternatively, the blocks 1010 to 1050 may be implemented by the processors 102 and 202 of FIG. 19 and the block 1060 may be implemented by the transceivers 106 and 206 of FIG. 19.

Codewords may be converted into radio signals via the signal processing circuit 1000 of FIG. 20. Herein, the codewords are encoded bit sequences of information blocks. The information blocks may include transport blocks (e.g., a UL-SCH transport block, a DL-SCH transport block). The radio signals may be transmitted through various physical channels (e.g., a PUSCH and a PDSCH).

Specifically, the codewords may be converted into scrambled bit sequences by the scramblers 1010. Scramble sequences used for scrambling may be generated based on an initialization value, and the initialization value may include ID information of a wireless device. The scrambled bit sequences may be modulated to modulation symbol sequences by the modulators 1020. A modulation scheme may include pi/2-Binary Phase Shift Keying (pi/2-BPSK), m-Phase Shift Keying (m-PSK), and m-Quadrature Amplitude Modulation (m-QAM). Complex modulation symbol sequences may be mapped to one or more transport layers by the layer mapper 1030. Modulation symbols of each transport layer may be mapped (precoded) to corresponding antenna port(s) by the precoder 1040. Outputs z of the precoder 1040 may be obtained by multiplying outputs y of the layer mapper 1030 by an N*M precoding matrix W. Herein, N is the number of antenna ports and M is the number of transport layers. The precoder 1040 may perform precoding after performing transform precoding (e.g., DFT) for complex modulation symbols. Alternatively, the precoder 1040 may perform precoding without performing transform precoding.

The resource mappers 1050 may map modulation symbols of each antenna port to time-frequency resources. The time-frequency resources may include a plurality of symbols (e.g., a CP-OFDMA symbols and DFT-s-OFDMA symbols) in the time domain and a plurality of subcarriers in the frequency domain The signal generators 1060 may generate radio signals from the mapped modulation symbols and the generated radio signals may be transmitted to other devices through each antenna. For this purpose, the signal generators 1060 may include Inverse Fast Fourier Transform (IFFT) modules, Cyclic Prefix (CP) inserters, Digital-to-Analog Converters (DACs), and frequency up-converters.

Signal processing procedures for a signal received in the wireless device may be configured in a reverse manner of the signal processing procedures 1010 to 1060 of FIG. 20. For example, the wireless devices (e.g., 100 and 200 of FIG. 19) may receive radio signals from the exterior through the antenna ports/transceivers. The received radio signals may be converted into baseband signals through signal restorers. To this end, the signal restorers may include frequency downlink converters, Analog-to-Digital Converters (ADCs), CP remover, and Fast Fourier Transform (FFT) modules. Next, the baseband signals may be restored to codewords through a resource demapping procedure, a postcoding procedure, a demodulation processor, and a descrambling procedure. The codewords may be restored to original information blocks through decoding. Therefore, a signal processing circuit (not illustrated) for a reception signal may include signal restorers, resource demappers, a postcoder, demodulators, descramblers, and decoders.

Example of Application Of Wireless Device Applied to the Present Disclosure

FIG. 21 illustrates another example of a wireless device applied to the present disclosure.

The wireless device may be implemented in various forms according to a use-case/service (refer to FIG. 18). Referring to FIG. 21, wireless devices 100 and 200 may correspond to the wireless devices 100 and 200 of FIG. 19 and may be configured by various elements, components, units/portions, and/or modules. For example, each of the wireless devices 100 and 200 may include a communication unit 110, a control unit 120, a memory unit 130, and additional components 140. The communication unit may include a communication circuit 112 and transceiver(s) 114. For example, the communication circuit 112 may include the one or more processors 102 and 202 and/or the one or more memories 104 and 204 of FIG. 19. For example, the transceiver(s) 114 may include the one or more transceivers 106 and 206 and/or the one or more antennas 108 and 208 of FIG. 19. The control unit 120 is electrically connected to the communication unit 110, the memory 130, and the additional components 140 and controls overall operation of the wireless devices. For example, the control unit 120 may control an electric/mechanical operation of the wireless device based on programs/code/commands/information stored in the memory unit 130. The control unit 120 may transmit the information stored in the memory unit 130 to the exterior (e.g., other communication devices) via the communication unit 110 through a wireless/wired interface or store, in the memory unit 130, information received through the wireless/wired interface from the exterior (e.g., other communication devices) via the communication unit 110.

The additional components 140 may be variously configured according to types of wireless devices. For example, the additional components 140 may include at least one of a power unit/battery, input/output (I/O) unit, a driving unit, and a computing unit. The wireless device may be implemented in the form of, without being limited to, the robot (100 a of FIG. 18), the vehicles (100 b-1 and 100 b-2 of FIG. 18), the XR device (100 c of FIG. 18), the hand-held device (100 d of FIG. 18), the home appliance (100 e of FIG. 18), the IoT device (100 f of FIG. 18), a digital broadcast terminal, a hologram device, a public safety device, an MTC device, a medicine device, a fintech device (or a finance device), a security device, a climate/environment device, the AI server/device (400 of FIG. 18), the BSs (200 of FIG. 18), a network node, etc. The wireless device may be used in a mobile or fixed place according to a use-example/service.

In FIG. 21, the entirety of the various elements, components, units/portions, and/or modules in the wireless devices 100 and 200 may be connected to each other through a wired interface or at least a part thereof may be wirelessly connected through the communication unit 110. For example, in each of the wireless devices 100 and 200, the control unit 120 and the communication unit 110 may be connected by wire and the control unit 120 and first units (e.g., 130 and 140) may be wirelessly connected through the communication unit 110. Each element, component, unit/portion, and/or module within the wireless devices 100 and 200 may further include one or more elements. For example, the control unit 120 may be configured by a set of one or more processors. As an example, the control unit 120 may be configured by a set of a communication control processor, an application processor, an Electronic Control Unit (ECU), a graphical processing unit, and a memory control processor. As another example, the memory 130 may be configured by a Random Access Memory (RAM), a Dynamic RAM (DRAM), a Read Only Memory (ROM)), a flash memory, a volatile memory, a non-volatile memory, and/or a combination thereof.

Example of Hand-Held Device Applied to the Present Disclosure

FIG. 22 illustrates a hand-held device applied to the present disclosure. The hand-held device may include a smartphone, a smartpad, a wearable device (e.g., a smartwatch or a smartglasses), or a portable computer (e.g., a notebook). The hand-held device may be referred to as a mobile station (MS), a user terminal (UT), a Mobile Subscriber Station (MSS), a Subscriber Station (SS), an Advanced Mobile Station (AMS), or a Wireless Terminal (WT).

Referring to FIG. 22, a hand-held device 100 may include an antenna unit 108, a communication unit 110, a control unit 120, a memory unit 130, a power supply unit 140 a, an interface unit 140 b, and an I/O unit 140 c. The antenna unit 108 may be configured as a part of the communication unit 110. Blocks 110 to 130/140 a to 140 c correspond to the blocks 110 to 130/140 of FIG. 21, respectively.

The communication unit 110 may transmit and receive signals (e.g., data and control signals) to and from other wireless devices or BSs. The control unit 120 may perform various operations by controlling constituent elements of the hand-held device 100. The control unit 120 may include an Application Processor (AP). The memory unit 130 may store data/parameters/programs/code/commands needed to drive the hand-held device 100. The memory unit 130 may store input/output data/information. The power supply unit 140 a may supply power to the hand-held device 100 and include a wired/wireless charging circuit, a battery, etc. The interface unit 140 b may support connection of the hand-held device 100 to other external devices. The interface unit 140 b may include various ports (e.g., an audio I/O port and a video I/O port) for connection with external devices. The I/O unit 140 c may input or output video information/signals, audio information/signals, data, and/or information input by a user. The I/O unit 140 c may include a camera, a microphone, a user input unit, a display unit 140 d, a speaker, and/or a haptic module.

As an example, in the case of data communication, the I/O unit 140 c may acquire information/signals (e.g., touch, text, voice, images, or video) input by a user and the acquired information/signals may be stored in the memory unit 130. The communication unit 110 may convert the information/signals stored in the memory into radio signals and transmit the converted radio signals to other wireless devices directly or to a BS. The communication unit 110 may receive radio signals from other wireless devices or the BS and then restore the received radio signals into original information/signals. The restored information/signals may be stored in the memory unit 130 and may be output as various types (e.g., text, voice, images, video, or haptic) through the I/O unit 140 c.

Effects of a method and a device of transmitting and receiving an uplink channel in a wireless communication system according to an embodiment of the present disclosure are described below.

According to an embodiment of the present disclosure, based on that a transmission of an uplink channel collides with a transmission of other uplink channel scheduled to a UE in a time domain, i) if a first panel related to the transmission of the uplink channel is different from a second panel related to the transmission of the other uplink channel, the uplink channel and the other uplink channel are simultaneously transmitted, and ii) if the first panel is the same as the second panel, the uplink channel is transmitted in a specific resource.

Accordingly, 1) if panel(s) for a transmission of each uplink channel is different, a UE supporting simultaneous transmission across multi-panel (STxMP) can improve resource utilization in the transmission of the uplink channel by simultaneously transmitting multiple uplink channels.

2) If panel(s) for a transmission of each uplink channel is the same, according to the existing method, only one uplink channel is transmitted, and remaining uplink channels are dropped. However, according to an embodiment of the present disclosure, any uplink channel is not dropped. For example, an uplink channel with a low priority can be transmitted in a specific resource. Thus, utilization of resources required for scheduling of the uplink channels is increased. That is, there is no need to transmit again scheduling information for an uplink channel (dropped according to the existing method).

Here, the wireless communication technology implemented in wireless devices (e.g., 100/200 of FIG. 19) of the present disclosure may include narrowband Internet of Things (NB-IoT) for low-power communication as well as LTE, NR, and 6G. For example, NB-IoT technology may be an example of low power wide area network (LPWAN) technology and may be implemented in standards such as LTE Cat NB1 and/or LTE Cat NB2, but it is limited to the above-mentioned names. Additionally or alternatively, the wireless communication technology implemented in the wireless devices (e.g., 100/200 of FIG. 19) of the present disclosure may perform communication based on LTE-M technology. In this instance, for example, LTE-M technology may be an example of LPWAN technology and may be called by various names such as enhanced machine type communication (eMTC). For example, LTE-M technology may be implemented in at least one of various standards such as 1) LTE CAT 0, 2) LTE Cat M1, 3) LTE Cat M2, 4) LTE non-BL (non-Bandwidth Limited), 5) LTE-MTC, 6) LTE machine type communication, and/or 7) LTE M, and is not limited to the above-described name. Additionally or alternatively, the wireless communication technology implemented in the wireless devices (e.g., 100/200 of FIG. 21) of the present disclosure may include at least one of ZigBee, Bluetooth, and low power wide area network (LPWAN) in consideration of low power communication, but is not limited to the above-mentioned names. For example, the ZigBee technology can create personal area networks (PANs) related to small/low-power digital communication based on various standards such as IEEE 802.15.4, and can be called by various names.

The embodiments of the present disclosure described above are combinations of elements and features of the present disclosure. The elements or features may be considered selective unless otherwise mentioned. Each element or feature may be practiced without being combined with other elements or features. Further, an embodiment of the present disclosure may be constructed by combining parts of the elements and/or features. Operation orders described in embodiments of the present disclosure may be rearranged. Some constructions of any one embodiment may be included in another embodiment and may be replaced with corresponding constructions of another embodiment. It is obvious to those skilled in the art that claims that are not explicitly cited in each other in the appended claims may be presented in combination as an embodiment of the present disclosure or included as a new claim by subsequent amendment after the application is filed.

The embodiments of the present disclosure may be achieved by various means, for example, hardware, firmware, software, or a combination thereof. In a hardware configuration, the methods according to the embodiments of the present disclosure may be achieved by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), processors, controllers, microcontrollers, microprocessors, etc.

In a firmware or software configuration, the embodiments of the present disclosure may be implemented in the form of a module, a procedure, a function, etc. For example, software code may be stored in a memory unit and executed by a processor. The memories may be located at the interior or exterior of the processors and may transmit data to and receive data from the processors via various known means.

Those skilled in the art will appreciate that the present disclosure may be carried out in other specific ways than those set forth herein without departing from the spirit and essential characteristics of the present disclosure. The above embodiments are therefore to be construed in all aspects as illustrative and not restrictive. The scope of the disclosure should be determined by the appended claims and their legal equivalents, not by the above description, and all changes coming within the meaning and equivalency range of the appended claims are intended to be embraced therein. 

1-16. (canceled)
 17. A method of transmitting, by a user equipment (UE), an uplink channel in a wireless communication system, the method comprising: receiving, from a base station, signal related to a cell search, wherein the signal related to the cell search includes Primary Synchronization Signal (PSS), Secondary Synchronization Signal (SSS) and Physical Broadcast Channel (PBCH); receiving, from the base station, system information, based on the cell search being completed; transmitting, to the base station, a preamble for a random access procedure; receiving, from the base station, a response for the preamble; transmitting, to the base station, capability information which is related to a transmission of the uplink channel, based on the random access procedure being completed; receiving, from the base station, configuration information related to the transmission of the uplink channel; receiving, from the base station, Downlink Control Information (DCI) which is related to scheduling of the transmission of the uplink channel; and transmitting, to the base station, the uplink channel based on the configuration information, wherein the capability information includes information related to a panel for a transmission of the uplink channel, wherein based on that the transmission of the uplink channel collides with a transmission of other uplink channel scheduled to the UE in a time domain, i) based on a first panel related to the transmission of the uplink channel being different from a second panel related to the transmission of the other uplink channel, the uplink channel and the other uplink channel are simultaneously transmitted, and ii) based on the first panel being the same as the second panel, the uplink channel is transmitted in a specific resource.
 18. The method of claim 17, wherein based on that a priority of the uplink channel is lower than a priority of the other uplink channel, the uplink channel is transmitted in the specific resource.
 19. The method of claim 18, wherein the specific resource is positioned in a time domain that is shifted by a pre-configured unit from a time domain in which the transmission of the uplink channel is configured.
 20. The method of claim 18, wherein the specific resource is based on a resource in which the other uplink channel is configured.
 21. The method of claim 18, wherein based on that the uplink channel and the other uplink channel are the same type of uplink channels, the priority is determined depending on a pre-configured priority rule.
 22. The method of claim 21, wherein the priority is determined based on at least one of the following 1) to 5): 1) whether a corresponding uplink channel has been scheduled based on a control resource set (CORESET) having a lowest ID, 2) whether the corresponding uplink channel has been scheduled by downlink control information (DCI) based on a specific radio network temporary identifier (RNTI), 3) a periodicity related to a transmission of the corresponding uplink channel, 4) a type of information related to the corresponding uplink channel, and 5) whether the corresponding uplink channel has been scheduled by downlink control information (DCI) preceding in a time domain
 23. The method of claim 17, wherein based on that the uplink channel and the other uplink channel are simultaneously transmitted, a resource in which the uplink channel and the other uplink channel are transmitted is based on 1) the same time-frequency domain or 2) the same time domain.
 24. The method of claim 23, wherein based on that all or part of a frequency domain in which the transmission of the uplink channel is configured does not overlap all or part of a frequency domain in which the transmission of the other uplink channel is configured, the uplink channel and the other uplink channel are simultaneously transmitted based on frequency division multiplexing (FDM).
 25. The method of claim 24, wherein the uplink channel and the other uplink channel that are simultaneously transmitted based on the FDM are transmitted based on at least one of a frequency hopping or a repetition.
 26. The method of claim 25, wherein based on that a frequency hopping boundary configured to the uplink channel and a frequency hopping boundary configured to the other uplink channel are identical to each other, the uplink channel and the other uplink channel are simultaneously transmitted based on the frequency hopping and the repetition.
 27. The method of claim 17, wherein the capability information is related to whether a simultaneous transmission across multi-panel (STxMP) is supported.
 28. A user equipment (UE) transmitting an uplink channel in a wireless communication system, the UE comprising: one or more transceivers; one or more processors configured to control the one or more transceivers; and one or more memories operatively connected to the one or more processors and configured to store instructions performing operations based on being executed by the one or more processors, wherein the operations comprise: receiving, from a base station, signal related to a cell search, wherein the signal related to the cell search includes Primary Synchronization Signal (PSS), Secondary Synchronization Signal (SSS) and Physical Broadcast Channel (PBCH); receiving, from the base station, system information, based on the cell search being completed; transmitting, to the base station, a preamble for a random access procedure; receiving, from the base station, a response for the preamble; transmitting, to the base station, capability information which is related to a transmission of the uplink channel, based on the random access procedure being completed; receiving, from the base station, configuration information related to the transmission of the uplink channel; receiving, from the base station, Downlink Control Information (DCI) which is related to scheduling of the transmission of the uplink channel; and transmitting, to the base station, the uplink channel based on the configuration information, wherein the capability information includes information related to a panel for a transmission of the uplink channel, wherein based on that the transmission of the uplink channel collides with a transmission of other uplink channel scheduled to the UE in a time domain, i) based on a first panel related to the transmission of the uplink channel being different from a second panel related to the transmission of the other uplink channel, the uplink channel and the other uplink channel are simultaneously transmitted, and ii) based on the first panel is the same as the second panel, the uplink channel being transmitted in a specific resource.
 29. A method of receiving, by a base station, an uplink channel in a wireless communication system, the method comprising: transmitting, to a user equipment (UE), signal related to a cell search, wherein the signal related to the cell search includes Primary Synchronization Signal (PSS), Secondary Synchronization Signal (SSS) and Physical Broadcast Channel (PBCH); transmitting, to the UE, system information, based on the cell search being completed; receiving, from the UE, a preamble for a random access procedure; transmitting, to the UE, a response for the preamble; receiving, from the UE, capability information which is related to a transmission of the uplink channel, based on the random access procedure being completed; transmitting, to the UE, configuration information related to the transmission of the uplink channel; transmitting, to the UE, Downlink Control Information (DCI) which is related to scheduling of the transmission of the uplink channel; and receiving, from the UE, the uplink channel based on the configuration information, wherein the capability information includes information related to a panel for a transmission of the uplink channel, wherein based on that the transmission of the uplink channel collides with a transmission of other uplink channel scheduled to the UE in a time domain, i) based on a first panel related to the transmission of the uplink channel being different from a second panel related to the transmission of the other uplink channel, the uplink channel and the other uplink channel are simultaneously transmitted, and ii) based on the first panel being the same as the second panel, the uplink channel is transmitted in a specific resource. 